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Assembly Theory of Binary Messages

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29 April 2024

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30 April 2024

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Abstract
Using assembly theory, we investigate the assembly pathways of binary strings (bitstrings) of length N formed by joining bits present in the assembly pool and the bitstrings that entered the pool as a result of previous joining operations. We show that the bitstring assembly index is bounded from below by the shortest addition chain for N, and we conjecture about the form of the upper bound. We define the degree of causation for the minimum assembly index and show that for certain N it has regularities that can be used to determine the length of the shortest addition chain for N. We show that a bitstring with the smallest assembly index for N can be assembled by a binary program of length equal to this index if the length of this bitstring is expressible as a product of Fibonacci numbers. The results confirm that four Planck areas provide a minimum information capacity that corresponds to a minimum thermodynamic (Bekenstein-Hawking) entropy. Knowing that the problem of determining the assembly index is at least NP-complete, we conjecture that this problem is NP-complete, while the problem of creating the bitstring so that it would have a predetermined largest assembly index is NP-hard. The proof of this conjecture would imply P ≠ NP, since every computable problem and every computable solution can be encoded as a finite bitstring.
Keywords: 
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1. Introduction

Assembly Theory (AT) [1,2,3,4,5,6,7] provides a distinctive complexity measure, superior to established complexity measures used in information theory, such as Shannon entropy or Kolmogorov complexity [1,5]. AT does not alter the fundamental laws of physics [6]. Instead, it redefines objects on which these laws operate. In AT, objects are not considered sets of point particles (as in most physics), but instead are defined by the histories of their formation (assembly pathways) as an intrinsic property, where, in general, there are multiple assembly pathways to create a given object.
AT explains and quantifies selection and evolution, capturing the amount of memory necessary to produce a given object [6] (this memory is the object [8]). This is because the more complex a given object is, the less likely an identical copy can be observed without the selection of some information-driven mechanism that generated that object. Formalizing assembly pathways as sequences of joining operations, AT begins with basic units (such as chemical bonds) and ends with a final object. This conceptual shift captures evidence of selection in objects [1,2,6].
The assembly index of an object corresponds to the smallest number of steps required to assemble this object, and - in general - increases with the object’s size but decreases with symmetry, so large objects with repeating substructures may have a smaller assembly index than smaller objects with greater heterogeneity [1]. The copy number specifies the observed number of copies of an object. Only these two quantities describe the evolutionary concept of selection by showing how many alternatives were excluded to assemble a given object [6,8].
AT has been experimentally confirmed in the case of molecules and has been probed directly experimentally with high accuracy with spectroscopy techniques, including mass spectroscopy, IR, and NMR spectroscopy [6,7]. It is a versatile concept with applications in various domains. Beyond its application in the field of biology and chemistry [7], its adaptability to different data structures, such as text, graphs, groups, music notations, image files, compression algorithms, human languages, memes, etc., showcases its potential in diverse fields [2].
In this study, we investigate the assembly pathways of binary strings (bitstrings) by joining individual bits present in the assembly pool and bitstrings that entered the pool as a result of previous joining operations.
 In particular, we investigate the assembly of black-body objects (BBs: black holes (BHs), white dwarfs, and neutron stars) considered bitstrings [9,10,11]. It is known [2,9,10,11,12,13,14,15,16,17,18,19,20] that information in the universe evolves toward increased structural complexity, decreasing information entropy.
 This study extends the findings of previous research [9,10,11,21] within the framework of AT and emergent dimensionality [9,10,11,16,18,19,21,22,23]. However, our results generally apply to information theory. Therefore, we put the BB-related content in frames like this one. The reader not interested in BBs may skip the text in these frames.
Bit is the smallest amount and the quantum of information. Perceivable information about any object can be encoded by a bitstring [24,25] but this does not imply that a bitstring defines an object. Information that defines a chemical compound, a virus, a computer program, etc. can be encoded by a bitstring. However, a dissipative structure [13] such as a living biological cell (or its conglomerate such as a human, for example) cannot be represented by a bitstring (even if its genome can). This information can only be perceived (so this is not an object defining information). Therefore, we use the emphasis for the object in this paper as this term, understood as a collection of matter, is a misnomer, as it neglects the (quantum) nonlocality [22]. The nonlocality is independent of the entanglement among particles [26], as well as the quantum contextuality [27], and increases as the number of particles [21] grows [28,29]. Furthermore, the ugly duckling theorem [24,25] asserts that every two objects we perceive are equally similar (or equally dissimilar).
Furthermore, a bitstring, as such is neither dissipative nor creative. It is its assembly process that can be dissipative or creative. The perceivable universe is not big enough to contain the future; it is deterministic going back in time and non-deterministic going forward in time [30]. But we know [2,9,10,11,12,13,14,15,16,17,18,19,20] that it has evolved to the present since the Big Bang. Evolution is about assembling new information and optimizing its assembly process until it reaches the assembly index. Once the new information is assembled (by a dissipative structure operating far from thermodynamic equilibrium, or created by humans), it enters the realm of the 2nd law of thermodynamics, and nature seeks how to optimize its assembly pathway.
At first, the newly assembled information corresponds to the discovery by groping [12]. However, its assembly pathway does not attain its most economical or efficient form all at once. For a certain period of time, its evolution gropes about within itself. The try-out follows the try-out, not being finally adopted. Then finally perfection comes within sight, and from that moment the rhythm of change slows down [12]. The new information, having reached the limit of its potentialities, enters the phase of conquest. Stronger now than its less perfected neighbours, the new information multiplies and consolidates. When the assembly index is reached, new information attains equilibrium, and its evolution terminates. It becomes stable.
"Thanks to its characteristic additive power, living matter (unlike the matter of the physicists) finds itself ’ballasted’ with complications and instability. It falls, or rather rises, towards forms that are more and more improbable. Without orthogenesis life would only have spread; with it there is an ascent of life that is invincible." [12]
The paper is structured as follows. Section 2 introduces basic concepts and definitions used in the paper. Section 3 shows that the bitstring assembly index is bounded from below and provides the form of this bound. Section 4 defines the degree of causation for the smallest assembly index bitstrings. Section 5 shows that the bitstring assembly index is bounded from above and conjectures about the exact form of this bound. Section 6 introduces the concept of a binary assembling program and shows that, in general, the trivial assembling program assembles the smallest assembly index bitstrings. Section 7 discusses and concludes the findings of this study.

2. Preliminaries

For K subunits of an objectO the assembly index a O of this object is bounded [1] from below by
min a O = log 2 ( K ) ,
and from above by
max a O = K 1 ,
The lower bound (1) represents the fact that the simplest way to increase the size of a subunit in a pathway is to take the largest subunit assembled so far and join it to itself [1] and, in the case of the upper bound (2), subunits must be distinct so that they cannot be reused from the pool, decreasing the index.
Here, we consider bitstrings C k ( N ) containing bits { 1 , 0 } , with N 0 zeros and N 1 ones, having length N = N 0 + N 1 . N 1 is called the binary Hamming weight or bit summation of a bitstring. Bitstrings are our basic AT objects [2] and we consider the process of their formation within the AT framework. Where the bit value can be either 1 or 0, we write = { 1 , 0 } with * being the same within the bitstring C k ( N ) . If we allow for the 2nd possibility that can be the same as or different from *, we write = { 1 , 0 } . Thus, C k ( 2 ) = [ ] , for example, is a placeholder for all four 2-bit strings.
We consider bitstrings C k ( N ) to be messages transmitted through a communication channel between a source and a receiver, similarly to the Claude Shannon approach [31] used in the derivation of binary information entropy
H C k ( N ) = p 0 log 2 ( p 0 ) p 1 log 2 ( p 1 ) ,
where
p 0 = N 0 N and p 1 = N 1 N ,
are the ratios of occurrences of zeros and ones within the bitstring C k ( N ) and the unit of entropy (3) is bit.
Definition 1.
A bitstring assembly index a ( N ) is the smallest number of steps s required to assemble a bitstring C k ( N ) of length N by joining two distinct bits contained in the initial assembly pool P = { 1 , 0 } and bitstrings assembled in previous steps that were added to the assembly pool. Therefore, the assembly index a ( N ) ( C k ) is a function of the bitstring C k ( N ) .
For example, the 8-bit string
C k ( 8 ) = [ 01010101 ]
can be assembled in at most seven steps:
  • join 0 with 1 to form C k ( 2 ) = [ 01 ] , adding [ 01 ] to P = { 1 , 0 , 01 } ,
  • join C k ( 2 ) = [ 01 ] with 0 to form C k ( 3 ) = [ 010 ] , adding [ 010 ] to P = { 1 , 0 , 01 , 010 } ,
  • ...
  • join C k ( 7 ) = [ 0101010 ] with 1 to form C k ( 8 ) = [ 01010101 ]
(i.e. not using the assembly pool P), six, five, or four steps:
  • join 0 with 1 to form C k ( 2 ) = [ 01 ] , adding [ 01 ] to P,
  • join C k ( 2 ) = [ 01 ] with [ 01 ] taken from P to form C k ( 4 ) = [ 0101 ] , adding [ 0101 ] to P,
  • join C k ( 4 ) = [ 0101 ] with [ 01 ] taken from P to form C k ( 6 ) = [ 010101 ] , adding [ 010101 ] to P,
  • join C k ( 6 ) = [ 010101 ] with [ 01 ] taken from P to form C k ( 8 ) = [ 01010101 ] ,
or at least three steps:
  • join 0 with 1 to form C k ( 2 ) = [ 01 ] , adding [ 01 ] to P,
  • join C k ( 2 ) = [ 01 ] with [ 01 ] taken from P to form C k ( 4 ) = [ 0101 ] , adding [ 0101 ] to P,
  • join C k ( 4 ) = [ 0101 ] with [ 0101 ] taken from P to form C k ( 8 ) = [ 01010101 ] ,
while the 8-bit string
C l ( 8 ) = [ 00010111 ]
can be assembled in at least six steps:
  • join 0 with 1 to form C l ( 2 ) = [ 01 ] , adding [ 01 ] to P,
  • join C l ( 2 ) = [ 01 ] with [ 01 ] taken from P to form C l ( 4 ) = [ 0101 ] , adding [ 0101 ] to P,
  • join 0 with 0 adding [ 00 ] to P,
  • join C l ( 4 ) = [ 0101 ] with [ 00 ] taken from P to form C l ( 6 ) = [ 000101 ] , adding [ 000101 ] to P,
  • join C l ( 6 ) = [ 000101 ] with 1 to form C l ( 7 ) = [ 0001011 ] , adding [ 0001011 ] to P,
  • join C l ( 7 ) = [ 0001011 ] with 1 to form C l ( 8 ) = [ 00010111 ] ,
as only the doublet [ 01 ] can be reused from the pool. Therefore, bitstrings (5) and (6), despite having the same length N = 8 , Hamming weight N 1 = 4 , and Shannon entropy (3), have respective assembly indices a ( 8 ) ( C k ) = 3 and a ( 8 ) ( C l ) = 6 that represent the lengths of their shortest assembly pathways, which in turn ensures that their assembly pools P are distinct sets for a given assembly pathway.
Table 1 and Table A6Table A13 (Appendix D) show the distributions of the assembly indices among 2 N bitstrings for 4 N 12 taking into account the number of ones N 1 . The sums of each column form Pascal’s triangle read by rows (OEIS sequence A007318).
The following definition is commonly known, but we provide it here for clarity.
Definition 2.
A bitstring B k ( N ) is a balanced string if its Hamming weight N 1 = N / 2 or N 1 = N / 2 .
Without loss of generality, we shall assume that if N is odd, N 1 < N 0 (e.g., for N = 5 , N 1 = 2 , and N 0 = 3 ). However, our results are equivalently applicable if we assume the opposite (i.e. a larger number of ones for an odd N). The number | B ( N ) | of balanced bitstrings among all 2 N bitstrings is1
| B ( N ) | = N N / 2 = N N / 2 2 π N 2 N .
This is the OEIS A001405 sequence, the maximal number of subsets of an N-set such that no one contains another, as asserted by Sperner’s theorem, and approximated using Stirling’s approximation for large N. Balanced and even length bitstrings B k ( N ) have natural binary entropies (3) H ( B k ( N ) ) = { 0 , 1 } . Conversely, non-balanced and/or odd-length bitstrings C k ( N ) have binary entropies 0 < H ( C k ( N ) ) < 1 .
 BBs emit Hawking black-body radiation having a continuous spectrum that depends only on one factor, the BB temperature | T BB | = T P / ( 2 π d BB ) corresponding to the BB diameter D BB d BB P , d BB R , where P and T P denotes respectively the Planck length and temperature [9].
 Triangulated BB surfaces contain a balanced number of Planck area triangles, each having binary potential δ φ = c 2 · { 0 , 1 } , where c denotes speed of light in vacuum, as has been shown [9,11], based on the Bekenstein-Hawking entropy [32,33,34] S BB = k B N BB / 4 . Here k B is the Boltzmann constant and N BB π D BB 2 / P 2 = π d BB 2 is the information capacity of the BB surface, i.e., the N BB N Planck triangles corresponding to bits of information [9,10,11,33,35,36], and the fractional part triangle(s) having the area { N BB } P 2 = ( N BB N BB ) P 2 too small to carry a single bit of information [9,10].
 Therefore, a balanced bitstring B k represents a BB surface comprising N 1 = N BB / 2 active Planck triangles (APTs) with binary potential φ APT = c 2 and energy E BB = ± M BB c 2 [10].
Theorem 1.
An N = 4 -bit string is the shortest string having more than one bitstring assembly index 1.
Proof. 
The proof is trivial. For N = 1 the assembly index a ( 1 ) ( C ) = 0 , as all basis objects have a pathway assembly index of 0 [2] (they are not assembled). N = 2 provides four available bitstrings with a ( 2 ) ( C ) = 1 . N = 3 provides eight available bitstrings with a ( 3 ) ( C ) = 2 . Only N = 4 provides 16 bitstrings that include four stings with a ( 4 ) ( C ) = 2 and twelve bitstrings with a ( 4 ) ( C ) = 3 including | B ( 4 ) | = 6 balanced bitstrings, as shown in Table 1 and Table 2. For example, to assemble the bitstring B 1 = [ 0101 ] , we need to assemble the bitstring [ 01 ] and reuse it. Therefore, a ( N ) ( C k ) = N 1 for 0 < N < 4 , k = { 1 , 2 , , 2 N } and min k { a ( N ) ( C k ) } < N 1 for N 4 , where { a ( N ) ( C k ) } denotes a set of assembly indices of all 2 N bitstrings.    □
Interestingly, Theorem 1 strengthens the meaning of N = 4 as the minimum information capacity that provides a minimum thermodynamic black hole entropy [32,33,34]. There is no disorder or uncertainty in an object that can be assembled in the same number of steps s 2 .
The following definition, taking into account the cyclic order of bitstrings, is also provided for the sake of clarity.
Definition 3.
A bitstring R k ( N ) is a ringed bitstring if a ring formed with this string by joining its beginning with its end is unique among the rings formed from the other ringed strings R l ( N ) , l k .
There are at least two and at most N forms of a ringed bitstring R k ( N ) that differ in the position of the starting bit. For example for | B ( 4 ) | = 6 balanced bitstrings, shown in Table 2, two augmented strings with a ( 4 ) = 2 correspond to each other if we change the starting bit
[ 1 | 0101 | 0101 | 01 ] = [ 10 | 1010 | 1010 | 1 ] .
Similarly, four augmented bitstrings with a ( 4 ) = 3 correspond to each other
[ | 0110 | 0110 | 011 ] = [ 0 | 1100 | 1100 | 11 ] = [ 01 | 1001 | 1001 | 1 ] = [ 011 | 0011 | 0011 | ] ,
after a change in the position of the starting bit. Thus, there are only two balanced ringed bitstrings E k ( 4 ) .
The number of ringed bitstrings | R k ( N ) | among all 2 N bitstrings is given by the OEIS sequence A000031. In general (for N 3 ), the number | R k ( N ) | of ringed bitstrings is much lower than the number | B k ( N ) | of balanced bitstrings.
 As asserted by the no-hair theorem [37], BH is characterized only by three parameters: mass, electric charge, and angular momentum.
 However, BHs are fundamentally uncharged and non-rotating, since the parameters of any conceivable BH, that is, charged (Reissner-Nordström), rotating (Kerr) and charged rotating (Kerr-Newman), can be arbitrarily altered, provided that the area of a BH surface does not decrease [38] using Penrose processes [39,40] to extract electrostatic and/or rotational energy of a BH [41].
 Thus, a BH is defined by a single real number, and no Planck triangle is distinct on a BH surface. We can define neither a beginning nor an end of a balanced ringed bitstring E k ( N BH ) that represents a given BH.
By neglecting the notion of the beginning and end of a string, we focus on its length and content. In Yoda’s language,
"complete, no matter where it begins. A message is".
The numbers of the balanced | B k ( N ) | , ringed | R k ( N ) | , and balanced ringed2  | E k ( N ) | bitstrings are shown in Table 3 and Figure 1. The formula for | E k ( N ) | remains to be researched.
We note that, in general, the starting bit is relevant for the assembly index. Thus, different forms of a ringed bitstring may have different assembly indices. For example, for N = 7 balanced bitstrings B 34 and B 35 , shown in Table A16 have a ( 7 ) = 6 . However, these bitstrings are not ringed, since they correspond to each other and to the balanced bitstrings B 13 , B 18 , B 20 , B 28 , and B 30 with a ( 7 ) = 5 . They all have the same triplet of adjoining ones.
Definition 4.
The assembly index of a ringed bitstring R k ( N ) is the smallest assembly index among all forms of this string.
Thus, if different forms of a ringed bitstring have different assembly indices, we assign the smallest assembly index to this string. In other words, we assume that the smallest number of steps
a ( N ) ( R k ) = min l { a ( N ) ( R k ) l } , ( R k ) l R k ,
where ( R k ) l denotes a particular l th form of a ringed bitstring R k , is the bitstring assembly index of this ringed string. We assume that if an object that can be represented by a ringed bitstring can be assembled in fewer steps, this procedure will be preferred by nature.
The distribution of the assembly indices of the balanced ringed bitstrings E k is shown in Table 4.

3. Minimum Bitstring Assembly Index

In the following, we derive the tight lower bound of the set of different bitstring assembly indices.
Theorem 2
(Tight lower bound on the bitstring assembly index). The smallest bitstring assembly index a ( N ) ( C min ) as a function of N corresponds to the shortest addition chain for N (OEIS A003313).
Proof. 
Bitstrings C min for which a ( N ) ( C min ) = min k { a ( N ) ( C k ) } , k = { 1 , 2 , , 2 N } can be formed in subsequent steps s by joining the longest bitstring assembled so far with itself until N = 2 s is reached [1]. Therefore, if N = 2 s , then min k { a ( 2 s ) ( C k ) } = s = log 2 ( N ) . Only four bitstrings
C min 1 ( 2 s ) = [ 00 ] , C min 2 ( 2 s ) = [ 11 ] , C min 3 ( 2 s ) = [ 0101 ] , and C min 4 ( 2 s ) = [ 1010 ]
have such an assembly index in this case.
An addition chain for N N having the shortest length s N (commonly denoted as l ( N ) ) is defined as a sequence 1 = b 0 < b 1 < < b s = N of integers such that for each j 1 , b j = b k + b l for l k < j . The first step in creating an addition chain for N is always b 1 = 1 + 1 = 2 and this corresponds to assembling a doublet [ ] from the initial assembly pool P. Thus, the lower bound for s of the addition chain for N, s log 2 ( N ) is achieved for N = 2 s . In our case, this bound is achieved by the bitstrings (11). The second step in creating an addition chain can be b 2 = 1 + 1 = 2 or b 2 = 1 + 2 = 3 .
Thus, finding the shortest addition chain for N corresponds to finding an assembly index of a bitstring containing bits and/or doublets and/or triplets generated by these doublets for N 2 s since due to Theorem 1 only they provide the same assembly indices { 0 , 1 , 2 } . Such strings correspond to linear molecules made of carbons ([4], Supplementary Materials, S3.2).    □
The smallest assembly indices a min ( N ) are shown in Table 5 for 1 N 21 . Calculating the minimum length of the addition chain for N, as well as finding the shortest assembly pathway for a chemical molecule, have been shown to be at least as hard as NP-complete [4,42].

4. Degree of Causation for Minimum Assembly Index Bitstrings

Using the difference between the general AT lower bound (1) and the smallest bitstring assembly index (OEIS A003313) we can define the quantity
D C ( N ) 2 log 2 ( N ) a min ( N ) = N 2 a min ( N ) ,
capturing a degree of causation [6] of assembling the bitstrings of length N with the smallest assembly index, as shown in Figure 2. For N = 2 s , the degree of causation D C ( N ) = 1 , as all bitstrings (11) can be assembled along a single pathway only; their assembly is entirely causal. However, for N 2 s , D C ( N ) < 1 , since some bitstrings C min ( N ) can be assembled along different pathways. For example, there are two pathways for the bitstring [ 001 ] : (a) [ 00 ] + 1 and (b) 0 + [ 01 ] leaving different subunits ( [ 00 ] and [ 01 ] ) in their assembly pools and resulting in lower values of D C ( N ) .
Equation (12) naturally divides the set of natural numbers into sections 2 s N < 2 s + 1 and shows regularities that for certain values of N can be used to determine the smallest assembly index (i.e. the shortest addition chain for N) as a min ( N ) = log 2 ( N ) log 2 ( D C ( N ) ) . For each N = 2 s a min ( 2 s ) = s and for each N ^ being the sum of two powers of 2 (OEIS A048645)
N ^ 2 s + 1 · 2 l , l = 0 , 1 , , s 1 a min ( N ^ ) = s + 1 ,
while for the remaining N ˜ not being the sum of two powers of 2 (OEIS A072823)
2 s < N ˜ < 2 s + 1 , N ˜ N ^ a min ( N ˜ ) = s + k , k 2 ,
where k = 2 for N ˜ = { 7 , 11 , 13 15 , 19 , 21 23 , 25 28 , } , while some N ˜ ’s generate exceptions to this general rule. For example, k = 3 for N ˜ = { 29 , 31 , 47 , 53 , 55 , 57 59 , 61 63 , } , k = 4 for N ˜ = { 127 , 191 , 235 , 237 , 239 , 247 , 251 , 253 , 254 , } , etc. The first exception, k = 3 is for N ˜ 13 = 29 . The first double exception, k = 4 is for N ˜ 63 = 127 . However, in particular, for
N ˜ 3 = 2 s + 3 · 2 l , l = 0 , 1 , , s 2 a min ( N ˜ 3 ) = s + 2 , and
N ˜ 7 , s 3 = 2 s + 7 · 2 s 3 = { 15 , 30 , 60 , } , s 3 a min ( N ˜ 7 , s 3 ) = s + 2 ,
so the number of Ns within each section, not included in the set of general rules 2 s , (13), (15), and (16), is | N ngr | = | 2 s 1 s ( s 1 ) 1 | = | 2 s 2 s 1 | . Furthermore,
lim s min D C ( N ^ ) = lim s 1 2 1 + 1 2 s = 1 2 , lim s max D C ( N ˜ ) = D C ( N ˜ 7 , s 3 ) = 15 32 .
The shortest addition chain sequence generating factors for 1 s 5 are listed in Table 6, where the subsequent odd numbers of the form m k generate sequences N = 2 s + m k · 2 l , where l = 0 , 1 , , k 1 , while the m k numbers in red indicate that certain N ˜ s within the sequences they generate are exceptions to the general a min ( N ˜ ) = s + 2 rule. For example, if s = 4 then a min ( 16 ) = 4 and
N ^ = 2 4 + 2 l = { 17 , 18 , 20 , 24 } a min ( N ^ ) = 4 + 1 = 5 , N ˜ 3 = 2 4 + 3 · 2 l = { 19 , 22 , 28 } a min ( N ˜ 3 ) = 4 + 2 = 6 , N ˜ 5 = 2 4 + 5 · 2 l = { 21 , 26 } a min ( N ˜ 5 ) = 4 + 2 = 6 , N ˜ 7 = 2 4 + 7 · 2 l = { 23 , 30 } a min ( N ˜ 7 ) = 4 + 2 = 6 , N ˜ 9 = 2 4 + 9 · 2 l = 25 a min ( N ˜ 9 ) = 4 + 2 = 6 , N ˜ 11 = 2 4 + 11 · 2 l = 27 a min ( N ˜ 11 ) = 4 + 2 = 6 , N ˜ 13 = 2 4 + 13 · 2 l = 29 a min ( N ˜ 13 ) = 4 + 3 = 7 , N ˜ 15 = 2 4 + 15 · 2 l = 31 a min ( N ˜ 15 ) = 4 + 3 = 7 ,
where the last two values a min ( N ˜ ) are higher than those given by the general rule. Based on the OEIS A003313 sequence for N 10 5 , we have determined the number of exceptions, that is | N exc | such that a min ( N exc ) { s , s + 1 , s + 2 } for 0 s 15 as shown in Table 7, where min m k is the minimal generating factor m k shown in Table 6 that generates the exceptional a min ( N exc ) . For all s 4 , max m k = 2 s 1 . The fact that | N ngr | > | N exc | , s 3 hints at the existence of general rules other than 2 s , (13), (15), and (16).
Furthermore, for 4 s 6 , | N exc | = 2 s s 2 + 2 and for s 7 , | N exc | = 2 s s 2 + 1 (OEIS A024012) [43]. As shown in Figure 3(a), for all s, | N exc | asymptotically approaches 2 s available in a given section as s , as shown in Figure 3(b) For s = 6 this ratio has a deflection point | N exc | / 2 6 = 15 / 32 .
It was determined that only living systems have been found to be capable of producing abundant molecules with an assembly index greater than an experimentally determined value of 15 steps [3,8]. The cut-off between 13 and 15 is sharp, which means that molecules made by random processes cannot have assembly indices exceeding 13 steps [3,8]. In particular, N = 15 is the length of the shortest addition chain for N which is smaller than the number of multiplications to compute N th power by the Chandah-sutra method (OEIS A014701). Furthermore, the values of the sequence A014701 are larger than the shortest addition chain for N 2 2 + 2 l . These values (OEIS A371894) are not given by equation (15) but equation (16) provides their subset. Their Hamming weight is at least 4 in binary representation [44]. Furthermore, the exceptional a min ( N exc ) values bear similarity to the atomic numbers Z of chemical elements that violate the Aufbau rule [21] that correctly predicts the electron configurations of most elements. Only about twenty elements within 24 Z 103 (with only two non-doubleton sets of consecutive ones) violate the Aufbau rule.

5. Maximum Bitstring Assembly Index

In the following, we conjecture the form of the upper bound of the set of different bitstring assembly indices. In general, of all bitstrings C k having a given assembly index, shown in Table 1 and Table A6Table A13 (Appendix D), most have N 1 = N / 2 , though we have found a few exceptions, mostly for non-maximal assembly indices, namely for a ( 8 ) = 4 ( 4 < 8 ) and for a ( 8 ) = 6 ( 24 < 26 ), for a ( 10 ) = 4 ( 2 < 5 ) and for a ( 10 ) = 5 ( 32 < 33 ), and for a ( 12 ) = 4 ( 2 < 3 ). These observations allow us to restrict the search space of possible bitstrings with the largest assembly indices to balanced bitstrings only: with the exception of N = 8 , of all bitstrings C k ( N ) having a largest assembly index, most are balanced. We can further restrict the search space to ringed bitstrings (Definition 3). If a bitstring C min for which a ( N ) ( C min ) = min k { a ( N ) ( C k ) } is constructed from repeating patterns, then a bitstring C max for which a ( N ) ( C max ) = max k { a ( N ) ( C k ) } must be the most patternless. The bitstring assembly index must be bounded from above and a ( N ) ( C max ) must be a monotonically nondecreasing function of N that can increase at most by one between N and N + 1 . Certain heuristic rules apply in our binary case. For example,
  • for N = 7 we cannot avoid two doublets (e.g. 2 × [ 00 ] ) within a ringed bitstring E 28 ( 7 ) = [ 0011100 ] and thus a ( 7 ) ( C max ) = 5 < 6 ,
  • for N = 8 we cannot avoid two pairs of doublets (e.g. 2 × [ 00 ] and 2 × [ 11 ] ) within a ringed bitstring E 7 ( 8 ) = [ 00001111 ] and thus a ( 8 ) ( C max ) = 5 < 6 ,
  • for N = 12 we cannot avoid three pairs of doublets (e.g. 2 × [ 00 ] , 2 × [ 10 ] , and 2 × [ 11 ] ) within a ringed bitstring E k ( 12 ) = [ 111000101100 ] and thus a ( 12 ) ( C max ) = 8 < 9 ,
  • for N = 14 we cannot avoid two pairs of doublets and one doublet three times (e.g. 2 × [ 00 ] , 2 × [ 11 ] , and 3 × [ 01 ] , and thus a ( 14 ) ( C max ) = 9 < 10 ,
  • etc.
Table 8 shows the exemplary balanced bitstrings B max having the largest assembly indices that we assembled (cf. also Appendix B). To determine the assembly index a ( 18 ) = 11 of the bitstring
E k ( 18 ) = [ 1 ( 001 ) ( 11 ) ( 110 ) ( 110 ) ( 00 ) ( 001 ) 0 ] ,
for example, we look for the longest patterns that appear at least twice within the string, and we look for the largest number of these patterns. Here, we find that each of the two triplets [ 001 ] and [ 110 ] appear twice in E k ( 18 ) and are based on the doublets [ 00 ] and [ 11 ] also appearing in E k ( 18 ) . Thus, we start with the assembly pool { 1 , 0 , [ 00 ] , [ 001 ] , [ 11 ] , [ 110 ] } made in four steps and join the elements of the pool in the following seven steps to arrive at a ( 18 ) ( E k ) = 11 . On the other hand, another form of this balanced ringed string
E l ( 18 ) = [ ( 01 ) ( 11 ) ( 110 ) ( 110 ) 00 ( 001 ) ( 01 ) 0 ] ,
has a ( 18 ) ( E l ) = 12 .
These results allow us to formulate the following conjecture.
Conjecture 1
[Tight upper bound on a bitstring assembly index]. With exceptions for small N the largest bitstring assembly index a ( N ) ( C max ) is given by a sequence formed by { + 1 , + 1 , k × 0 , + 1 , + 1 , k × 0 } for k N 0 , where + 1 denotes increasing a ( N ) ( C max ) by one, and 0 denotes maintaining it at the same level, and a ( 0 ) = 1 .
However, at this moment, we cannot state whether this conjecture applies to ringed or non-ringed bitstrings. The assembly indices for N < 3 are the same for a given N, whereas the assembly indices for 4 N 10 were discussed above and are calculated in Appendix D for balanced and balanced ringed bitstrings.
The conjectured sequence is shown in Figure 4 and Figure 5 starting with a ( 0 ) = 1 (we note in passing that n = 1 is a dimension of the void, the empty set , or (-1)-simplex). Subsequent terms are given by { 0 , 1 , 2 , 3 , 4 , 5 , 5 , 6 , 7 , 7 , 8 , 9 , 9 , 9 , 10 , } , which is periodic for N = k ( k + 3 ) and flattens at a ( N ) ( C max ) = 4 k 3 , and a ( N ) ( C max ) = 4 k 1 , k N , k > 1 .
This sequence can be generated using the following procedure
  • step=1;                    % step flag
  • run =1;                    % run flag
  • flat=0;                    % flat counter
  •  
  • Nk = 0;
  • aub= -1;                   % the upper bound
  • while Nk < N
  •     if step < 3
  •         Nk = Nk+1;         % next Nk
  •         aub= aub + 1;      % increment the bound
  •     else                         % step==3
  •         for k=1:flat
  •             if flat > 0
  •                 Nk = Nk+1; % next Nk
  •             end
  •         end
  •         run = run+1;       % increment run flag
  •         if run > 2
  •             run  = 1;        % reset run flag
  •             flat = flat+1;   % increment flat counter
  •         end
  •     end
  •     step = step+1;         % increment step flag
  •     if step > 3
  •         step=1;            % reset step flag
  •     end
  • end
We note the similarity of this bound to the monotonically nondecreasing Shannon entropy of chemical elements, including observable ones [21]. Perhaps the exceptions in the sequence of Conjecture 1 vanish as N increases.

6. Binputation

So far we have assembled bitstrings "manually". Now we shall automatize this process using other bitstrings as assembling programs.
Definition 5.
The binary assembling program Q B is a bitstring of length s Q that acts on the assembly pool P and outputs the assembled bitstrings, adding them to the pool.
Definition 6.
The trivial assembling program Q is a binary assembling program with consecutive bits denoting the following commands:
0
⇔ take the last element from P, join it with itself, and output,
1
⇔ take the last two elements from P, join them with each other, and output.
As the assembly pool P is a distinct set to which bitstrings are added in subsequent assembly steps, only these two commands apply to the initial assembly pool P = { 1 , 0 } containing only two bits, regardless of the starting command.
Theorem 3.
If a bitstring C min ( N ) can be assembled by an elegant trivial program of length s Q = a ( N ) ( C min ) then N is expressible as a product of Fibonacci numbers (OEIS A065108) and the length s Q of any trivial program Q is not shorter than the assembly index of the string that this trivial assembling program assembles.
Proof. 
An elegant program is the shortest program that produces a given output [45,46]. Furthermore, no program P shorter than an elegant program Q can find this elegant program Q [45]. If it could, it could also generate the Q’s output. But if P is shorter than Q, then Q would not be elegant, which leads to a contradiction.
The 1 st bit of the trivial assembling program Q is irrelevant as Q = 0 assembles C min 1 ( 2 ) = [ 00 ] and Q = 1 assembles C min 4 ( 2 ) = [ 10 ] , so Q = assembles C min 1 , 4 ( 2 ) = [ 0 ] . Then the programs Q = 0 0 assemble the 2 s Q -bit strings C min 1 , 4 ( 2 s ) = [ 0 0 ] having the assembly index a min ( 2 s Q ) = s Q , while bitstrings C min 2 , 3 2 s Q with the smallest assembly index a min ( 2 s Q ) = s Q can be assembled with the same two programs starting with the reversed assembly pool P = { 0 , 1 } .
The remaining 2 s Q 1 2 programs will assemble some of the shorter bitstrings with the assembly index a min ( N ) = s Q . In general, all programs Q assemble bitstrings having lengths expressible as a product of Fibonacci numbers (OEIS A065108) as shown in Table A2 (Appendix C), wherein out of 2 s Q 1 programs (cf. Table A5 and Table A2):
  • 2 s Q 2 programs Q = 0 assemble even length balanced bitstrings B = [ 0 0 ] having natural binary entropies (3) H ( C ) = { 0 , 1 } , including bitstrings C min 1 , 4 ( 2 s Q ) (11),
  • 2 s Q 3 programs Q = 10 assemble [ 0 00 0 ] bitstrings having lengths divisible by three and entropies H ( C ) { 0 , 0.9183 } ,
  • 2 s Q 4 programs Q = 110 assemble [ 00 0 00 0 ] bitstrings having lengths divisible by five and entropies H ( C ) { 0 , 0.9710 } ,
  • 2 s Q 5 programs Q = 1110 assemble [ 0 0 00 0 ] bitstrings having lengths divisible by eight, entropies H ( C ) { 0 , 0.9544 } , and assembly indices a ( N ) = s Q 1 if = 1 ,
  • ⋯,
  • the program Q = 1 0 joins two shortest bitstrings assembled in a previous step into a bitstring of length being twice the Fibonacci sequence (OEIS A055389), and finally
  • the program Q = 1 1 assembles the shortest bitstring that has length belonging to the set of Fibonacci numbers.
Thus, for = 1 , binary assembling programs Q assemble subsequent 2 s Q 1 = 2 s Q 2 + 2 s Q 3 + + 2 0 + 1 Fibonacci words and their concatenations having entropies (3) with ratios (4)
p 1 , m = F m F m + 2 and p 0 , m = F m + 1 F m + 2 ,
where m = { 1 , 2 , s Q } , and F is the Fibonacci sequence starting from 1. Ratios (21) rapidly converge to
lim s Q p 0 , m = φ 1 0.618033989 and lim s Q p 1 , m = 2 φ 0.381966011
where φ is the golden ratio. Therefore, lim s Q H m 0.9594 is the binary entropy of the Fibonacci word limit. The Fibonacci sequence can be expressed through the golden ratio, which corresponds to the smallest Pythagorean triple { 3 , 4 , 5 } [23,47].
However, for s Q 4 , some of the programs are no longer elegant if = 0 and some of the assembled bitstrings are not C min if = 1 .
For s Q 4 , Q = 111100 assembles a bitstring
C non - min ( 2 s Q 1 ) = [ 01010010 ]
with an assembly index a ( 2 s Q 1 ) = s Q which is not the minimum for this length of the bitstring. For example, the 4-bit program Q = 111 assembles the bitstring C ( 8 ) = [ 0 0 00 0 ] , but if = 0 this string can be assembled by a shorter 3-bit program Q = 00 , and if = 1 this string does not have the smallest assembly index a ( 8 ) ( C min ) = 3 but a ( 8 ) ( C non - min ) = 4 .
For s Q = { 4 , 7 } and s Q 10 and for the shortest bitstring assembled by the program Q the program Q is not elegant for = 0 and the shortest bitstring assembled by the program is not C min for = 1 .
However, the length s Q of any program Q is not shorter than the assembly index of the bitstring that this program assembles. □
The trivial assembly programs Q and the bitstrings they assemble are listed in Table 9 and Table A3Table A5 (Appendix C) for one version of the assembly pool and for 1 s Q 6 .
We note in passing that there are other mathematical results on bitstrings and the Fibonacci sequence. For example, it was shown [48] that having two concentric circles with radii { F n , F n + 2 } and drawing two pairs of parallel lines orthogonal to each other and tangent to the inner circle, one obtains an octagon defined by the points of intersection of those lines with the outer circle, which comes very close to the regular octagon with n . Furthermore, each of these octagons defines a Sturmian binary word (a cutting sequence for lines of irrational slope) except in the case of n = 5 [48].
Perhaps the smallest assembly index given by Theorem 2 and the bitstrings of Theorem 3 are related to the Collatz conjecture, as the lengths of the strings (11) for N = 2 2 k correspond to the numbers to which the Collatz conjecture converges, from N = ( 2 2 k 1 ) / 3 , k N (OEIS A002450).
Theorem 3 is also related to Gödel’s incompleteness theorems and the halting problem. N cases of the halting problem correspond only to log 2 ( N ) , not to N bits of information [49] and therefore, complexity is more fundamental to incompleteness than self-reference of Gödel’s sentence [50]. Any formal axiomatic system only enables provable theorems to be proved. If a theorem can be proved by an automatic theorem prover, the prover will halt after proving this theorem. Thus, proving a theorem equals halting. If we assume that the axioms of the trivial program given by Definition 6 define the formal axiomatic system, then the bitstrings having lengths expressible as a product of Fibonacci numbers assembled by this program would represent provable theorems.
If we wanted to define a binary assembling program Q B that would use specific bitstrings other than the last one or two bitstrings in the assembly pool, we would have to index the bitstrings in the pool. However, at the beginning of the assembly process, we cannot predict in advance how many bitstrings will enter the assembly pool. Thus, we do not know how many bits will be needed to encode the indices of the strings in the pool. Therefore, we state the following conjecture.
Conjecture 2.
There is no binary assembling program (Definition 5) that has a length shorter than the length of the bitstring having the largest assembly index that could assemble this string.
Theorem 3 would be violated if in Definition 6 we specified the command "0" e.g. as "take the last element from the assembly pool, join it with itself, join with what you have already assembled (say at "the right"), and output". Then, the 2-bit program "00" would produce the 6-bit string [ 000000 ] with the assembly index a ( 6 ) = 3 . However, such a one-step command would violate the axioms of assembly theory, since it would perform two assembly steps in one program step. An elegant program to output the gigabyte bitstring of all zeros would take a few bits of code and would have a low Kolmogorov complexity [51]. However, such a bitstring would be outputted, not assembled. Furthermore, the length of such a program that outputs the bitstring [ 0 ] would be shorter than the length of the program that outputs the string [ 10 ] , while in AT, the lengths of these programs must be the same if the strings have the same assembly indices. Definitions 5, 6 and Theorem 3 are about binputation, about bitstrings assembling other bitstrings.
In particular, Theorem 3 confirms that the assembly index is related to the amount of physical memory required to store the information to direct the assembly of an object (a bitstring in our case) and set a directionality in time from the simple to the complex [8]: s Q -bit long trivial assembling programs (i.e., with s Q -bits of memory) can assemble 2 s Q -bit strings with minimal assembly indices s Q and, for s Q 4 , some shorter but more complex bitstrings with non-minimal assembly indices s Q . The memory defines the object [8].

7. Discussion and Conclusions

Consider the SARS-CoV-2 genome sequence defined by 29903 nucleobases { A , C , G , T } , its initial version MN9089473 collected in December 2019 in Wuhan and its sample OL3513704 collected in Egypt nearly two years after the Wuhan outbreak, on October 23, 2021. In the MN version, the nucleobases are distributed as | A | = 8954 , | C | = 5492 , | G | = 5863 , and | T | = 9594 and in the OL version as | A | = 8954 , | C | = 5470 , | G | = 5856 , and | T | = 9623 , following Chargaff’s parity rules with the same count of adenines. We can convert these sequences into bitstrings by assigning two bits per nucleobase. For such N = 59806 , not being the sum of two powers of 2, with the degree of causation [6] given by equation (14), the assembly index is bounded by
21 a ( 59806 ) ( C k ) 971 .
Interestingly, if a bitstring C ( N ) were to encode four DNA/RNA nucleobases, then the smallest assembly index bitstrings (as well as the strings generated by trivial assembly programs Q according to Definition 6) would not encode all nucleobases. For example, the bitstring C min ( 10 ) = [ 1001010010 ] with a min ( 10 ) = 4 and encoding A=00, C=01, G=10, and T=11, cannot encode T=11. Therefore, we increased the lower bound (24), given by Theorem 2, by one. The upper bound (24) was estimated by finding the smallest k that satisfies k ( k + 3 ) N and using the relation a ( N ) ( C max ) = 4 k 1 of Conjecture 1. We do not know the actual assembly indices of the MN and OL sequences. Their determination is an NP-complete problem, as we conjecture. There are twelve possible assignments of two bits per one nucleobase with twelve different Hamming weights and six different Shannon entropies (3)
N 1 C M N ( 59806 ) = { 25801 , 26172 , 26441 , 26812 , 29263 , 29532 , 30274 , 30543 , 32994 , 33365 , 33634 , 34005 } , N 1 C O L ( 59806 ) = { 25750 , 26136 , 26419 , 26805 , 29234 , 29517 , 30289 , 30572 , 33001 , 33387 , 33670 , 34056 } , H C M N ( 59806 ) = { 0.9864 , 0.9887 , 0.9903 , 0.9923 , 0.9997 , 0.99989 } , H C O L ( 59806 ) = { 0.9860 , 0.9885 , 0.9902 , 0.9922 , 0.9996 , 0.99988 } .
All sequences (25) are almost balanced ( N / 2 = 29903 ). However, the later OL versions are less balanced, producing lower Shannon entropies and showcasing the existence of an entopic force that governs genetic mutations [17]. We conjecture that the assembly index of the OL sequence is higher than that of the MN one - the evolution of information tends to increase the assembly index.
The bounds of Theorem 2 and Conjecture 1 are shown in Table 5 and Table 8 and illustrated in Figure 4 and Figure 5. No bitstring can be assembled in a smaller number of steps than given by a lower bound of Theorem 2. On the other hand, some bitstrings cannot be assembled in a smaller number of steps than given by an upper bound (which for large N, as we suppose, has the form presented in Conjecture 1).
The bounds on the bitstring assembly given by Theorem 2 and Conjecture 1, and the general bounds (1), and (2) on the assembly index [1] are shown in Figure 6 (adopted from [1] and modified). According to the authors of [1], the green region is illustrative of the location in the complexity space where life might reasonably be found. Yellow region below can be thought of as being potentially naturally occurring, and red region above being so complex that even living systems might have been unlikely to create them. This is because they represent structures with limited internal structure and symmetries, which would require vast amounts of effort to faithfully reproduce [1].
We disagree with this statement. We take it for granted that only humans are gifted with creativity. Any creation is required to be shaped by the unique personality of its human creator(s) to such an extent that it is statistically one-time in nature [52]; it is an imprint of the author’s personality. There is a certain minimum amount of information N C required to establish a creation, as shown in Figure 6. Sixteen possibilities bifurcate the assembly pathways (cf. Theorem 1) but none of these possibilities can be considered a creation. However, the boundary between the green region of dissipative structures [13] and the red region of human creativity remains to be discovered.
We found it much easier to determine the assembly index of a given bitstring C k ( N ) than to assemble a bitstring so that it would have the largest assembly index. Similarly, a trivial bitstring with the smallest assembly index for N can have the form C min 1 4 ( N ) = [ ] (11) or the form of a Fibonacci word generated by the trivial assembling program (Definition 6). Therefore, we state the following conjecture.
Conjecture 3.
The problem of determining the assembly index of any bitstring C k ( N ) and the problem of assembling a non-trivial bitstring so that it would have the smallest assembly index (Theorem 2) for N are NP-complete. The problem of assembling the bitstring so that it would have the largest assembly index for N is NP-hard.
A proof of conjecture 3 would also be the proof of the following known conjecture.
Conjecture 4.
P NP
Every computable problem and every computable solution can be encoded as a finite bitstring. Here, determining whether the assembly index of a given bitstring has its known maximal value corresponds to checking the solution to a problem for correctness, whereas assembling such a bitstring corresponds to solving the problem. Thus, AT would solve the P versus NP problem in theoretical computer science. There is ample pragmatic justification for adding P NP as a new axiom [49]; rather than attempting to prove this conjecture, mathematicians should accept that it may not be provable and simply accept it as an axiom [53].
 The total entropy of the universe S is constant and is the sum of the information entropy S i n f o and the physical entropy S p h y s . Therefore, over time [20]
d S i n f o d t + d S p h y s d t = 0 .
The time corresponds to an increasing information capacity. Bit by bit: d t = ( N + 1 ) N = 1
 BB having the energy given by mass-energy equivalence
E BB = k 2 M BB c 2 = k 2 m BB E P = d BB 4 E P = 1 4 N BB π E P , 2 k k max = 2 α 2 α 4 α 2 4 6.7933
where M BB m BB m P , m BB R denote the BB mass, and E P , m P denote the Planck energy and mass, α 1 / 137.036 is the fine-structure constant and α 2 1 / 140.178 is the 2 nd fine-structure constant related to α by ( α + α 2 ) / ( α α 2 ) = π , and k is the BB size-to-mass ratio (STM) [11] ( k = 2 if BB is BH).
 It was shown [10] based on the Mandelstam-Tamm [54], Margolus–Levitin [55], and Levitin-Toffoli [56] theorems on the quantum orthogonalization interval that BBs generate (or rather assemble) a pattern forming nonequilibrium shell (VS) through the solid-angle correspondence, as shown in Figure 7. The BB entropic work
W BB = T BB S BB = T BB 1 4 k B N BB = T BB 1 4 k B π d BB 2 = E P d BB 4 k 1 ± i k 2 4 1 ,
is the work done by all APTs of a BB. It is the product of the BB entropy [32,33,34] and the general, complex BB temperature
T BB = T P k π d BB 1 ± i k 2 4 1 ,
which in modulus and for a BH ( k = 2 ) reduces [11] to Hawking temperature
T BH = c 3 8 π G M BH k B = T P 2 π d BH ,
where = h / ( 2 π ) is the reduced Planck constant, G is the gravitational constant, and T P is the Planck temperature. In particular [11]
T BB ( k max ) = T P 2 π d BB α 2 α 4 α 2 4 ± i α 2 2 ,
T BB ( k eq ) = T P 2 π d BB α 2 ± i α 2 2 α 4 + α 2 4 ,
where
k eq = 2 α 2 α 4 + α 2 4 2.7665 .
is the energy equilibrium STM.
 A VS has the information capacity bounded by
N BB N VS 4 N BB , N VS l N BB , 1 l 4 ,
where l is a VS defining factor. The number of APTs is bounded by
1 4 N BB N 1 1 2 N BB ,
as shown in Figure 8, and thus its binary potential δ φ VS = N 1 c 2 / N V S [9,10] is bounded by
1 2 c 2 δ φ VS < 1 N BB 1 4 c 2 > 0 , N BB < 4 1 4 N BB 1 16 c 2 < 0 , N BB > 4 .
and the theoretical probability p 1 N 1 / N VS for a triangle on a VS to be an active Planck triangle is also bounded [10] by
1 16 1 4 N BB < p 1 1 2 ,
which is satisfied by the ratio p 1 , m (21) of the trivial assembling program 6 for N BB > 2 . On the other hand, the entropy variation [9,57] δ S / k B = c δ φ so that for N BB < 4 the lower bound (37) is negative and the upper bound (36) is positive ( N 1 1 in this range). The Planck triangle of VS is located somewhere on the VS surface defined by a solid angle
Ω = P 2 R BB 2 = 4 π P 2 4 π R BB 2 = 4 π N BB ,
that corresponds to the BB Planck triangle.
 The BB information capacity is dictated by its diameter and the BB energy (27) as a function of its diameter is the same for all BBs (it is independent on k). However, the BB mass and density
ρ BB = M BB V BB = 3 k N BB ρ P ,
are not.
 Based on the orbiting condition V O 2 V R 2 V E 2 , where V O = G M C / R avg is the orbital, and V E = 2 G M C / R avg is the escape speed of an orbiting object, R avg is the average distance from the center of the central object to the center of the orbiting object, and M C is the mass of the central object, the bounds
N BB 4 v R 4 N VS 4 N BB ,
containing the velocity term V R = v R c , v R { R , I } were also derived [10]. Plugging N VS from the bounds (34) into the bounds (40) we arrive at
1 4 l v R 4 1 l ,
which is satisfied by real and imaginary (but not complex) velocities (for example, for l = 1 by 1 v R 1 / 2 , 1 / 2 v R 1 , i v R i / 2 , and i / 2 v R i ). Taking the square root of the bounds (41), using v L L 2 + v R R 2 = 1 , v R { R , I } [10], and squaring again, we arrive at
l 2 l + 1 l v L 4 4 l 4 l + 1 4 l .
 The bounds (41) and (42), shown in Figure 9, meet at v = 1 / 2 , where de Broglie and Compton wavelengths of mass M are the same
λ dB = h p = h 1 V 2 c 2 M V = λ C = h M c V c = 1 2 ,
where p is the relativistic momentum. The same is the ratio of orbital to escape speed: V O V E = 1 2 .
 Furthermore, the bounds (41) and (42) do not overlap only for l = { 1 , 4 } . Therefore, 1 < l < 4 defines the dissipativity or the assembly range. Furthermore, the intersection of the bounds (41) and (42) is the common region for both velocities. If v L is within this region, then v R is as well. We note that the average orbital velocity of each orbiting object only slightly exceeds its orbital speed V O . This implies that the average VS defining factor l avg 1 in (34) for a VS orbiting object (cf. Appendix A).
 BBs define a perfect thermodynamic equilibrium, and the bounds (34) and (35) show that nature uses optimally assembled information (cf. Conjecture ??) to assemble new information. Figure 10 shows the bounds on the bitstring assembly indices and Figure 11 shows the BB temperature (30), energy (27), and entropic work (28) for 0 N BB 5 . k B | T BB | / E BB = 2 / N BB is a rational number for natural N BB . Furthermore, log 2 ( N BB ) > N BB 1 for N BB R and 1 < N BB < 2 .
 Let us examine this process starting from the Big Bang during the Planck epoch and shortly thereafter, and for continuous N BB R (i.e., including fractional Planck triangle(s)).
  • N BB = 0
    There is nothing to talk about. It is a mystery.
  • 0 < N BB < 1
    The Big Bang has occurred, forming the 1st BB. At N BB ( k max ) = ( α 4 α 2 4 ) / ( 4 π α 4 ) 0.0069 the BB temperature (30) and subsequently at N BH = 1 / ( 4 π ) 0.0796 the BH temperature (30) become equal to the Planck temperature, but any BB in this range is still too small to carry a single bit of information and cannot be triangulated. However, independent BBs merge [10,11] summing their entropies and increasing the information capacity.
  • N BB = 1
    The first bit (a degree of freedom [10]) becomes available and APTs on BBs begin to fluctuate providing the initial assembly pool P = { 1 , 0 } . The BH energy reaches the limit of the equipartition theorem for one bit ( E BH = 1 2 k B T BH ). However, the bounds (35) make them unable to generate any APTs on a VS ( N 1 = 0 ).
  • 1 < N BB < 2
    This is the only range in which the lower AT bound (1) is greater than the upper AT bound (2).
    The BH temperature (30) exceeds its energy (27) ( 1 2 k B T BH < E BH < k B T BH ) [10]. At N BH = 2 ln ( 2 ) the BH energy (27) is equal to the Landauer limit E BH = k B T BH ln ( 2 ) 1.3863 [58]. Shortly thereafter, at N BH = 1.5 , the BH density reaches the level of the Planck density For a BB [11] Still N 1 = 0 . Merging BBs expand fractional Planck triangle(s) to form the 2nd bit.
  • N BB = 2
    The first nonvanishing N 1 = 1 becomes available on a VS generated by a BB. The BH temperature (30) is equal to its energy (27) ( k B T BH = E BH = E P / ( 2 2 π ) ).
  • 2 < N BB < 3
    At N BB = 4 ln ( 2 ) the BH entropic work (28) is equal to the Landauer limit ( k B T BH = W BH = E P / ( 4 π ) ). At N BB > 2.4507 the density of the least dense BB ( k max 6.7933 ) decreases below the modulus of its temperature. N 1 = { 0 , 1 } .
  • N BB = 3
  • 3 < N BB < 4
    With N BB > 3 BBs can finally be triangulated. Yet, containing only one APT ( N 1 = { 0 , 1 } ), they are not ergodic [10].
    At N BH > π the BH surface gravity g BH = 1 / d BH decreases below the Planck acceleration and the tangential acceleration [9,10] becomes real ( a L R ).
  • N BB = 4
    The BB assembly index bifurcates, minimal thermodynamic entropy [33] is reached, and the relation (35) provides the second bit on a VS ( N 1 = 2 ). At this moment BB can be assembled in a different number of steps and nature seeks to minimize this number following the dynamics induced by the relation (26). The BH temperature (30) is equal to its entropic work (28) ( k B T BH = W BH ).
  • 4 < N BB < 6
    The BH temperature (30) finally decreases below the entropic work (28) limit and N 1 2 .
  • N BB = 6
    A BB reaches the upper bound on the ringed assembly index.
  • 6 < N BB < 7
    The imaginary Planck time appears at the BH surface [9] heralding the end of the Planck epoch. After crossing this threshold, the VSs begin to operate with 1 N 1 3 on 2 π < N VS 8 π , and the first dissipative structures can be assembled.
    Nature enters a directed exploration phase ( α < 1 ) and selectivity emerges, limiting the discovery of new objects [6].
  • N BB = 7
    A BB reaches the upper bound on the non-ringed assembly index.
  • N BB > 12
    At N BB = 4 π a first precise diameter relation can be established between the vertices of the BB surface. Furthermore, for N BB = 4 π , the solid angle (38) equals one steradian.
  • N BB > N C
    The onset of human creativity.
The results reported here can be applied in the fields of cryptography, data compression methods, stream ciphers, approximation algorithms [59], reinforcement learning algorithms [60], information-theoretically secure algorithms, etc. Another possible application of the results of this study could be molecular physics and crystallography. Overall, the results reported here support the AT, emergent dimensionality [9,10,11,16,18,19,21,22,23], the second law of infodynamics [17,20], and invite further research.

Author Contributions

WB: Conjecture concerning the diversification of bitstrings in Theorem 1; partitioning conjecture for N 16 resulting in the flattening of the bitstring assembly index upper bound curve; observation that the bitstring assembly index upper bound curve should be monotonically nondecreasing; prior-art search; numerous clarity corrections and improvements; SŁ: The remaining part of the study.

Data Availability Statement

The public repository for the code written in MATLAB computational environment is given under the link https://github.com/szluk/Evolution_of_Information (accessed on November 23, 2023).

Acknowledgments

The authors thank Piotr Masierak for his research on the general strategy for determining the bitstring assembly indices and creating the E k ( 18 ) bitstring (Peter’s rock), Andrzej Tomski for clarity corrections, and Mariola Bala for noting that "this is logical". SŁ thanks his wife Magdalena Bartocha for her unwavering support and motivation and his partner and friend, Renata Sobajda, for her prayers.

Abbreviations

The following abbreviations are used in this manuscript:
AT assembly theory;
BH black hole;
BB black-body object (BH, white dwarf, neutron star);
VS nonequilibrium shell;
APT active Planck triangle;
N length of a bitstring;
N 0 number of 0’s in the bitstring;
N 1 binary Hamming weight of the bitstring;
C k ( N ) bitstring of length N;
B k ( N ) balanced bitstring of length N;
R k ( N ) ringed bitstring of length N;
E k ( N ) balanced ringed bitstring of length N;
| C ( N ) | number of bitstrings of length N ( 2 N );
| B ( N ) | number of balanced bitstrings of length N (OEIS A001405);
| R ( N ) | number of ringed bitstrings of length N (OEIS A000031);
| E ( N ) | number of balanced ringed bitstrings of length N ;
a ( N ) assembly index of a bitstring of length N;
P = { 1 , 0 } initial assembly pool;
s assembly step;
Q binary assembling program;
s Q length of the binary assembling program;
F Fibonacci sequence.

Appendix A. Orbital Velocities and the VS Defining Factor

Table A1 shows the orbital speed V O and escape speed V E of some celestial objects, their minimal V min and maximal V max velocities5. The former lie below the orbital speed limits. The average VS defining factor l avg = ( l max l min ) / 2 , where l min / max = 3 ( V min / max V O ) / ( V E V O ) + 1 was determined by linear interpolation.
Table A1. Exemplary orbital speeds and velocities, and the average VS defining factor l avg .
Table A1. Exemplary orbital speeds and velocities, and the average VS defining factor l avg .
Object V O [km/s] V min [km/s] V max [km/s] V E [km/s] l avg
Mercury 47.88 38.86 58.98 67.71 1.158
Venus 35.02 34.79 35.26 49.53 1.000
Earth 29.79 29.29 30.29 42.13 1.000
Mars 24.13 21.97 26.50 34.13 1.030
Jupiter 13.06 12.44 13.72 18.47 1.011
Saturn 9.62 9.09 10.18 13.61 1.009
Uranus 6.8 6.49 7.11 9.61 1.000
Neptune 5.43 5.37 5.50 7.68 1.001
Pluto 4.74 3.71 6.10 6.70 1.247
The Moon 1.02 0.96 1.08 14.40 1.011

Appendix B. Exemplary Maximal Assembly Index Bitstrings

For the exemplary balanced ringed bitstrings E max , shown in Table 8:
  • all forms of E k ( 4 ) = [ 0011 ] have a ( 4 ) = 3 ,
  • all forms of E 6 ( 5 ) = [ 00011 ] have a ( 5 ) = 4 ,
  • all forms of E 16 ( 6 ) = [ 000111 ] have a ( 6 ) = 5 ,
  • the form E 28 ( 7 ) = [ 0011100 ] has a ( 7 ) = 5 but the form E 34 ( 7 ) = [ 0001110 ] has a ( 7 ) = 6 ,
  • all forms of E 45 ( 8 ) = [ 00010111 ] have a ( 8 ) = 6 ,
  • all forms of E 13 ( 9 ) = [ 000011101 ] have a ( 9 ) = 7 ,
  • the form E 22 ( 10 ) = [ 0000111101 ] has a ( 10 ) = 7 but the form E l ( 10 ) = [ 0111101000 ] has a ( 10 ) = 8 ,
  • all forms of E 7 ( 11 ) = [ 00000101111 ] have a ( 11 ) = 8 ,
  • all forms of E 9 ( 12 ) = [ 111000101100 ] have a ( 12 ) = 8 ,
  • all forms of E 8 ( 13 ) = [ 0000001011111 ] have a ( 13 ) = 9 ,
  • all forms of E k ( 14 ) = [ 00000101011111 ] have a ( 14 ) = 9 ,
  • all forms of E k ( 15 ) = [ 000001010111110 ] have a ( 15 ) = 10 ,
  • all forms of E k ( 16 ) = [ 1000000101011111 ] have a ( 16 ) = 10 ,
  • all forms of E k ( 17 ) = [ 00000010101111110 ] have a ( 17 ) = 11 ,
  • all forms of E k ( 18 ) = [ 000000101010111111 ] have a ( 18 ) = 11 ,
  • some forms of E k ( 19 ) = [ 1000010101001111101 ] have a ( 19 ) = 12 ,
  • some forms of E k ( 20 ) = [ 10100111110110000010 ] have a ( 20 ) = 13 .

Appendix C. Trivial Assembling Programs

Table A2 shows the lengths of the bitstrings assembled by the trivial assembling program introduced in Section 6 for 1 s Q 7 . The table is divided into sections corresponding to sets of assembled bitstrings having the same form but different lengths. For example, thirty two 7-bit programs in the bottom section assemble bitstrings C = [ 1 1 ] . The boxed symbols denote program commands, not the bitstring lengths.
Table A2. Lengths of the bitstrings assembled by trivial assembly programs Qs (OEIS A065108).
Table A2. Lengths of the bitstrings assembled by trivial assembly programs Qs (OEIS A065108).
a ( N ) 0 1 2 3 3,4 4,5 5,6 6,7
s Q 1 2 3 4 5 6 7
1 1 2 3 5 8 13 21 34
| | | | | 42
| | | | 0 26 39
| | | | 52
| | | 0 16 24 40
| | | | 48
| | | 32 48
| | | 64
| | 0 10 15 25 40
| | | | 50
| | | 30 45
| | | 60
| | 20 30 50
| | | 60
| | 40 60
| | 80
| 0 6 9 15 24 39
| | | | 48
| | | 30 45
| | | 60
| | 18 27 45
| | | 54
| | 36 54
| | 72
| 12 18 30 48
| | | 60
| | 36 54
| | 72
| 24 36 60
| | 72
| 48 72
| 96
0 4 6 10 16 26 42
| | | | 52
| | | 32 48
| | | 64
| | 20 30 50
| | | 60
| | 40 60
| | 80
| 12 18 30 48
| | | 60
| | 36 54
| | 72
| 24 36 60
| | 72
| 48 72
| 96
8 12 20 32 52
| | | 64
| | 40 60
| | 80
| 24 36 60
| | 72
| 48 72
| 96
16 24 40 64
| | 80
| 48 72
| 96
32 48 80
| 96
64 96
128
Table A3. 4-bit programs assembling bitstrings with a ( N ) = { 3 , 4 } .
Table A3. 4-bit programs assembling bitstrings with a ( N ) = { 3 , 4 } .
Q C ( s = 3 ) C ( s Q = 4 ) N
111 00 0 0 0 00 0 8
110 00 0 00 0 10
101 0 0 0 0 9
100 0 0 0 0 12
011 0 0 10
010 0 0 12
001 0 0 12
000 0 0 16
. This program is not elegant if = 0 and the assembled bitstring is not C min if = 1 .
Table A4. 5-bit programs assembling bitstrings with a ( N ) = { 4 , 5 } .
Table A4. 5-bit programs assembling bitstrings with a ( N ) = { 4 , 5 } .
Q C ( s = 4 ) C ( s Q = 5 ) N
1111 0 0 00 0 00 00 0 00 0 13
1110 0 0 00 0 0 0 00 0 16
1101 00 0 00 0 15
1100 00 0 00 0 20
1011 0 0 0 0 15
1010 0 0 0 0 18
1001 0 0 0 0 18
1000 0 0 0 0 24
0111 0 0 16
0110 0 0 20
0101 0 0 18
0100 0 0 24
0011 0 0 20
0010 0 0 24
0001 0 0 24
0000 0 0 32
. This program is not elegant (the same bitstring can be assembled using the shorter 4-bit program 000 ). . This program is not elegant if = 0 and the assembled bitstring is not C min if = 1 .
Table A5. 6-bit programs assembling bitstrings with a ( N ) = { 5 , 6 } .
Table A5. 6-bit programs assembling bitstrings with a ( N ) = { 5 , 6 } .
Q C ( s Q = 6 ) N
11111 0 0 00 0 00 00 0 00 0 21
11110 00 00 0 00 0 26
1110 0 0 00 0 24 , 32
110 00 0 25 , 30 , 40
10 0 0 24 , , 48
0 0 26 , 32 , , 64
. This program is not elegant. . This program is not elegant if = 0 and the assembled bitstring is not C min if = 1 .

Appendix D. Bitstrings and Their Assembly Indices

Table A2 show the lengths of the bitstrings assembled by programs Fs having the smallest assembly indices. Table A6-Table A13 show distributions of the assembly indices for 5 N 12 . Table A14-Table A18 show balanced bitstrings B ( N ) and their assembly indices for 5 N 8 . Table A19-Table A24 show the balanced ringed bitstrings E ( N ) and their assembly indices for 5 N 10 . Table A25-Table A27 show selected balanced ringed bitstrings E ( N ) and their assembly indices for 11 N 13 .
Table A6. Distribution of the assembly indices for N = 5 .
Table A6. Distribution of the assembly indices for N = 5 .
N 1
a ( 5 ) ( C ) | a ( 5 ( C ) | 0 1 2 3 4 5
3 18 1 3 5 5 3 1
4 14 2 5 5 2
32 1 5 10 10 5 1
Table A7. Distribution of the assembly indices for N = 6 .
Table A7. Distribution of the assembly indices for N = 6 .
N 1
a ( 6 ) ( C ) | a ( 6 ) ( C ) | 0 1 2 3 4 5 6
3 10 1 3 2 3 1
4 44 6 10 12 10 6
5 10 2 6 2
64 1 6 15 20 15 6 1
Table A8. Distribution of the assembly indices for N = 7 .
Table A8. Distribution of the assembly indices for N = 7 .
N 1
a ( 7 ) ( C ) | a ( 7 ) ( C ) | 0 1 2 3 4 5 6 7
4 50 1 5 7 12 12 7 5 1
5 74 2 14 21 21 14 2
6 4 2 2
128 1 7 21 35 35 21 7 1
Table A9. Distribution of the assembly indices for N = 8 .
Table A9. Distribution of the assembly indices for N = 8 .
N 1
a ( 8 ) ( C ) | a ( 8 ) ( C ) | 0 1 2 3 4 5 6 7 8
3 4 1 2 1
4 38 9 8 4 8 9
5 132 8 17 22 40 22 17 8
6 82 2 26 24 26 2
256 1 8 28 56 70 56 28 8 1
Table A10. Distribution of the assembly indices for N = 9 .
Table A10. Distribution of the assembly indices for N = 9 .
N 1
a ( 9 ) ( C ) | a ( 9 ) ( C ) | 0 1 2 3 4 5 6 7 8 9
4 24 1 3 3 5 5 3 3 1
5 184 4 17 35 36 36 35 17 4
6 248 2 19 42 61 61 42 19 2
7 56 4 24 24 4
512 1 9 36 84 126 126 84 36 9 1
Table A11. Distribution of the assembly indices for N = 10 .
Table A11. Distribution of the assembly indices for N = 10 .
N 1
a ( 10 ) ( C ) | a ( 10 ) ( C ) | 0 1 2 3 4 5 6 7 8 9 10
4 20 1 3 5 2 5 3 1
5 198 8 22 20 33 32 33 20 22 8
6 502 2 18 68 108 110 108 68 18 2
7 288 2 32 62 96 62 32 2
8 16 2 12 2
1024 1 10 45 120 210 252 210 120 45 10
Table A12. Distribution of the assembly indices for N = 11 .
Table A12. Distribution of the assembly indices for N = 11 .
N 1
a ( 11 ) ( C ) | a ( 11 ) ( C ) | 0 1 2 3 4 5 6 7 8 9 10 11
5 184 1 7 14 23 18 29 29 18 23 14 7 1
6 686 4 32 69 104 134 134 104 69 32 4
7 970 9 69 178 229 229 178 69 9
8 208 4 30 70 70 30 4
2048 1 11 55 165 330 462 462 330 165 55 11
Table A13. Distribution of the assembly indices for N = 12 .
Table A13. Distribution of the assembly indices for N = 12 .
N 1
a ( 12 ) | a ( 12 ) | 0 1 2 3 4 5 6 7 8 9 10 11 12
4 10 1 3 2 3 1
5 94 13 4 10 12 16 12 10 4 13
6 1034 12 42 94 141 130 196 130 141 94 42 12
7 1688 11 106 196 354 354 354 196 106 11
8 1180 16 143 282 298 282 143 16
9 90 2 14 58 14 2
4096 1 12 66 220 495 792 924 792 495 220 66 12 1
Table A14. | B ( 5 ) | = 10 balanced bitstrings.
Table A14. | B ( 5 ) | = 10 balanced bitstrings.
k B k ( 5 ) a ( 5 ) ( B k )
1 0 (0 1) (0 1) 3
2 (0 1) 0 (0 1) 3
3 (0 1) (0 1) 0 3
4 (1 0) 0 (1 0) 3
5 (1 0) (1 0) 0 3
6 0 0 0 1 1 4
7 0 0 1 1 0 4
8 0 1 1 0 0 4
9 1 0 0 0 1 4
10 1 1 0 0 0 4
Table A15. | B ( 6 ) | = 20 balanced bitstrings.
Table A15. | B ( 6 ) | = 20 balanced bitstrings.
k B k ( 6 ) a ( 6 ) ( B k )
1 (0 1) (0 1) (0 1) 3
2 (1 0) (1 0) (1 0) 3
3 0 (0 1) (0 1) 1 4
4 0 (0 1) 1 (0 1) 4
5 (0 1) 0 (0 1) 1 4
6 (0 1) (0 1) 1 0 4
7 (0 1) 1 0 (0 1) 4
8 (0 1) 1 (0 1) 0 4
9 (1 0) 0 (1 0) 1 4
10 (1 0) 0 1 (1 0) 4
11 (1 0) (1 0) 0 1 4
12 (1 0) 1 (1 0) 0 4
13 1 (1 0) 0 (1 0) 4
14 1 (1 0) (1 0) 0 4
15 0 0 1 1 1 0 5
16 0 0 0 1 1 1 5
17 0 1 1 1 0 0 5
18 1 0 0 0 1 1 5
19 1 1 0 0 0 1 5
20 1 1 1 0 0 0 5
Table A16. | B ( 7 ) | = 35 balanced bitstrings.
Table A16. | B ( 7 ) | = 35 balanced bitstrings.
k B k ( 7 ) a ( 7 ) ( B k )
1 0 (0 1) (0 1) (0 1) 4
2 (0 1) (0 1) (0 1) 0 4
3 (1 0) (1 0) (1 0) 0 4
4 (0 1) (0 1) 0 (0 1) 4
5 (1 0) (1 0) 0 (1 0) 4
6 (0 1) 0 (0 1) (0 1) 4
7 (1 0) 0 (1 0) (1 0) 4
8 (1 0 0) (1 0 0) 1 4
9 (1 0 0) 1 (1 0 0) 4
10 1 (1 0 0) (1 0 0) 4
11 (0 0 1) 1 (0 0 1) 4
12 (0 0 1) (0 0 1) 1 4
13 1 (0 0) (0 0) 1 1 5
14 1 0 0 (0 1) (0 1) 5
15 (1 0) 0 0 1 (1 0) 5
16 (1 0) (1 0) 0 0 1 5
17 (1 0) 1 (1 0) 0 0 5
18 1 1 (0 0) (0 0) 1 5
19 1 (1 0) (1 0) 0 0 5
20 1 1 1 (0 0) (0 0) 5
21 (0 1) (0 1) 1 0 0 5
22 (0 1) 1 0 0 (0 1) 5
23 (0 1) 1 0 (0 1) 0 5
24 (0 1) 1 (0 1) 0 0 5
25 (0 1) 0 (0 1) 1 0 5
26 0 (0 1) (0 1) 1 0 5
27 0 (0 1) 1 (0 1) 0 5
28 (0 0) 1 1 1 (0 0) 5
29 (0 1) 0 0 (0 1) 1 5
30 (0 0) (0 0) 1 1 1 5
31 0 0 (0 1) (0 1) 1 5
32 0 0 (0 1) 1 (0 1) 5
33 1 (1 0) 0 0 (1 0) 5
34 0 0 0 1 1 1 0 6
35 0 1 1 1 0 0 0 6
Table A17. | B ( 8 ) | = 70 balanced bitstrings (1st part).
Table A17. | B ( 8 ) | = 70 balanced bitstrings (1st part).
k B k ( 8 ) a ( 8 ) ( B k )
1 ((0 1) (0 1)) ((0 1) (0 1)) 3
2 ((1 0) (1 0)) ((1 0) (1 0)) 3
3 ((0 0) (1 1)) ((0 0) (1 1)) 4
4 ((0 1) (1 0)) ((0 1) (1 0)) 4
5 ((1 0) (0 1)) ((1 0) (0 1)) 4
6 ((1 1) (0 0)) ((1 1) (0 0)) 4
7 (0 0) (0 0) (1 1) (1 1) 5
8 (0 0 1) (0 0 1) 1 1 5
9 0 (0 1) (0 1) (0 1) 1 5
10 0 (0 1) (0 1) 1 (0 1) 5
11 0 (0 1) 1 (0 1) (0 1) 5
12 (0 0 1) 1 1 (0 0 1) 5
13 (0 0) (1 1) (1 1) (0 0) 5
14 (0 1) 0 (0 1) (0 1) 1 5
15 (0 1) 0 (0 1) 1 (0 1) 5
16 (0 1) (0 1) 0 (0 1) 1 5
17 (0 1) (0 1) (0 1) 1 0 5
18 (0 1) (0 1) 1 0 (0 1) 5
19 (0 1) (0 1) 1 (0 1) 0 5
20 (0 1 1) 0 0 (0 1 1) 5
21 (0 1) 1 0 (0 1) (0 1) 5
22 (0 1) 1 (0 1) 0 (0 1) 5
23 (0 1) 1 (0 1) (0 1) 0 5
24 (0 1 1) (0 1 1) 0 0 5
25 (1 0 0) (1 0 0) 1 1 5
26 1 0 (0 1) (0 1) (0 1) 5
27 (1 0) 0 (1 0) 1 (1 0) 5
28 (1 0) 0 1 (1 0) (1 0) 5
29 (1 0 0) 1 1 (1 0 0) 5
30 (1 0 1) 0 0 (1 0 1) 5
31 (1 0) (1 0) 0 1 (1 0) 5
32 (1 0) (1 0) (1 0) 0 1 5
33 (1 0) (1 0) 1 (1 0) 0 5
34 (1 0) 1 (1 0) 0 (1 0) 5
35 (1 0) 1 (1 0) (1 0) 0 5
36 (1 1) (0 0) (0 0) (1 1) 5
37 (1 1 0) 0 0 (1 1 0) 5
38 1 1 (0 0 1) (0 0 1) 5
39 1 1 0 0 1 0 1 0 5
40 1 (1 0) (1 0) 0 (1 0) 5
41 (1 1 0) (1 1 0) 0 0 5
42 1 1 0 1 0 1 0 0 5
43 1 1 (1 0 0) (1 0 0) 5
44 (1 1) (1 1) (0 0) (0 0) 5
45 0 0 (0 1 1) (0 1 1) 5
46 0 (0 1 1) (0 1 1) 0 5
Table A18. | B ( 8 ) | = 70 balanced bitstrings (2nd part).
Table A18. | B ( 8 ) | = 70 balanced bitstrings (2nd part).
k B k ( 8 ) a ( 8 ) ( B k )
47 0 0 (0 1) (0 1) 1 1 6
48 0 0 (0 1) 1 1 (0 1) 6
49 0 0 0 (1 1) (1 1) 0 6
50 0 (0 1) (0 1) 1 1 0 6
51 0 0 1 1 (1 0) (1 0) 6
52 (0 1) 0 0 (0 1) 1 1 6
53 (0 1) 0 (0 1) 1 1 0 6
54 (0 1) (0 1) 1 1 0 0 6
55 (0 1) 1 1 0 0 (0 1) 6
56 (0 1) 1 1 0 (0 1) 0 6
57 (0 1) 1 1 (0 1) 0 0 6
58 0 (1 1) (1 1) 0 0 0 6
59 1 (0 0) (0 0) 1 1 1 6
60 (1 0) 0 0 (1 0) 1 1 6
61 1 0 0 (0 1) 1 (0 1) 6
62 (1 0) 0 0 1 1 (1 0) 6
63 (1 0) (1 0) 0 0 1 1 6
64 (1 0) 1 (1 0) 0 0 1 6
65 (1 0) 1 1 (1 0) 0 0 6
66 1 (1 0) 0 0 (1 0) 1 6
67 1 1 (0 1) 0 0 (0 1) 6
68 1 1 1 (0 0) (0 0) 1 6
69 1 1 (1 0) 0 0 (1 0) 6
70 1 1 (1 0) (1 0) 0 0 6
Table A19. | E ( 5 ) | = 2 balanced ringed bitstrings.
Table A19. | E ( 5 ) | = 2 balanced ringed bitstrings.
k E k ( 5 ) a ( 5 ) ( E k )
1 0 (0 1) (0 1) 3
6 0 0 0 1 1 4
Table A20. | E ( 6 ) | = 4 balanced ringed bitstrings.
Table A20. | E ( 6 ) | = 4 balanced ringed bitstrings.
k E k ( 6 ) a ( 6 ) ( E k )
1 (0 1) (0 1) (0 1) 3
3 0 (0 1) (0 1) 1 4
4 0 (0 1) 1 (0 1) 4
16 0 0 0 1 1 1 5
Table A21. | E ( 7 ) | = 5 balanced ringed bitstrings.
Table A21. | E ( 7 ) | = 5 balanced ringed bitstrings.
k E k ( 7 ) a ( 7 ) ( E k )
1 0 (0 1) (0 1) (0 1) 4
12 (0 0 1) (0 0 1) 1 4
30 (0 0) (0 0) 1 1 1 5
31 0 0 (0 1) (0 1) 1 5
32 0 0 (0 1) 1 (0 1) 5
Table A22. | E ( 8 ) | = 10 balanced ringed bitstrings.
Table A22. | E ( 8 ) | = 10 balanced ringed bitstrings.
k E k ( 8 ) a ( 8 ) ( E k )
1 ((0 1) (0 1)) ((0 1) (0 1)) 3
3 (0 0) (1 1) (0 0) (1 1) 4
7 (0 0) (0 0) (1 1) (1 1) 5
8 0 (0 1) 0 (0 1) 1 1 5
9 0 (0 1) (0 1) (0 1) 1 5
10 0 (0 1) (0 1) 1 (0 1) 5
11 0 (0 1) 1 (0 1) (0 1) 5
46 0 0 (0 1 1) (0 1 1) 5
45 0 0 (0 1) (0 1) 1 1 6
47 0 0 (0 1) 1 1 (0 1) 6
Table A23. Selected balanced ringed bitstrings | E ( 9 ) | = 14 .
Table A23. Selected balanced ringed bitstrings | E ( 9 ) | = 14 .
k E k ( 9 ) a ( 9 ) ( E k )
1 0 ((0 1) (0 1)) ((0 1) (0 1)) 4
2 0 ((0 0) (1 1)) ((0 0) (1 1)) 5
3 (0 (0 1)) (0 1) (0 0 1) 1 5
4 (0 (0 1)) (0 0 1) 1 (0 1) 5
5 (0 (0 1)) (0 0 1) (0 1) 1 5
6 0 (0 0 1) 1 1 (0 0 1) 6
7 0 0 (0 1) 1 (0 1) (0 1) 6
8 0 0 (0 1) (0 1) 1 (0 1) 6
9 0 0 (0 1) (0 1) (0 1) 1 6
10 0 (0 0 1) (0 0 1) 1 1 6
11 (0 0) (0 0) (1 1) 0 (1 1) 6
12 0 (0 0) (0 0) (1 1) (1 1) 6
13 (0 0) (0 0) 1 1 1 0 1 7
14 (0 0) (0 0) 1 0 1 1 1 7
Table A24. | E ( 10 ) | = 26 balanced ringed bitstrings.
Table A24. | E ( 10 ) | = 26 balanced ringed bitstrings.
k E k ( 10 ) a ( 10 ) ( E k )
1 ((0 1) (0 1)) ((0 1) (0 1)) (0 1) 4
2 0 ((0 1) (0 1)) ((0 1) (0 1)) 1 5
3 (0 1) (1 (0 1) 0) (1 (0 1) 0) 5
4 (0 (0 1) 1) (0 0 1 1) (0 1) 5
5 0 ((0 1) 0 1) 1 (0 1 0 1) 5
6 0 ((1 0) 1 0) 1 (1 0 1 0) 5
7 (0 1) ((0 1) 1 0) (0 1 1 0) 5
8 (0 (0 1)) (0 1) (0 0 1) 1 1 6
9 (0 (0 1)) (0 0 1) 1 1 (0 1) 6
10 (0 (0 1)) (0 0 1) 1 (0 1) 1 6
11 (0 (0 1)) (0 0 1) (0 1) 1 1 6
14 0 (0 0 1 1) 1 (0 0 1 1) 6
15 0 0 ((0 1) 1) (0 1 1) (0 1) 6
16 0 0 ((0 1) 1) (0 1) (0 1 1) 6
17 0 (0 0 1 1) (0 0 1 1) 1 6
19 0 0 (0 1) ((0 1) 1) (0 1 1) 6
12 (0 0) 0 (1 1) (1 1) (0 0) 1 7
13 0 0 (0 1) 1 1 (0 1) (0 1) 7
18 0 0 (0 1) (0 1) 1 1 (0 1) 7
20 0 0 (0 1) (0 1) (0 1) 1 1 7
21 (0 0) 0 1 (0 0) (1 1) (1 1) 7
22 (0 0) (0 0) (1 1) (1 1) 0 1 7
23 (0 0) (0 0) (1 1) 1 0 (1 1) 7
24 (0 0) (0 0) (1 1) 0 (1 1) 1 7
25 (0 0) (0 0) 1 0 (1 1) (1 1) 7
26 (0 0) (0 0) 0 1 (1 1) (1 1) 7
Table A25. Selected balanced ringed bitstrings E ( 11 ) .
Table A25. Selected balanced ringed bitstrings E ( 11 ) .
k E k ( 11 ) a ( 11 ) ( E k )
1 0 (0 1) ((0 1)) (0 1)) (0 1 0 1) 5
2 (0 (0 1) (0 1)) (0 0 1 0 1) 1 5
3 (0 0) ((0 0) 1 1) (1 0 0 1 1) 6
4 (0 (0 1)) (0 1) (0 1) (0 0 1) 1 6
5 (0 0) (0 0) (0 0) (1 1) (1 1) 1 7
6 (0 0) (1 1 0) 1 (0 0) (1 1 0) 7
7 (0 0) (0 0) (0 1) (0 1) 1 1 1 8
Table A26. Selected balanced ringed bitstrings E ( 12 ) .
Table A26. Selected balanced ringed bitstrings E ( 12 ) .
k E k ( 12 ) a ( 12 ) ( E k )
1 ((0 1) (0 1)) (0 1 0 1) (0 1 0 1) 4
2 (0 (0 1) 1 (0 1)) (0 0 1 1 0 1) 5
3 ((0 1) 1 (0 (0 1))) ((0 1) 1 (0 0 1)) 5
4 (0 (0 1) 1) (0 0 1 1) (0 1) (0 1) 6
5 ((0 1) 0 (0 1)) (0 1 0 0 1) 1 1 6
6 (0 0 1) (0 0 1) (0 0 1) 1 1 1 7
7 (0 0) (0 0) (0 0) (1 1) (1 1) (1 1) 7
8 (0 0) (0 0) (1 1) (1 1) 1 (0 0) 1 8
9 (0 0) (1 0) (1 1) (0 0) (1 1) (1 0) 8
10 (1 1) (1 1) (0 1) (0 1) (0 0) (0 0) 8
11 (1 1) (1 1) (0 0) (0 0) (1 0) (1 0) 8
Table A27. Selected balanced ringed bitstrings E ( 13 ) .
Table A27. Selected balanced ringed bitstrings E ( 13 ) .
k E k ( 13 ) a ( 13 ) ( E k )
1 0 ((0 1) (0 1)) (0 1 0 1) (0 1 0 1) 5
2 0 ((1 0) 0 1 (1 0)) (1 0 0 1 1 0) 6
3 (0 ((0 1) (0 1)) (0 0 1 0 1) (0 1) 1 6
4 0 (0 0) ((0 0) (1 1)) (0 0 1 1) (1 1) 7
5 (0 0) ((0 0) (1 1)) (0 0 1 1) 0 (1 1) 7
6 (0 0) (0 0) (0 0) 0 (1 1) (1 1) (1 1) 8
7 (0 0 (0 1)) (0 0 0 1) (0 1) 1 1 1 8
8 (0 0) (0 0) (0 0) 1 0 (1 1) (1 1) 1 9

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1
" x " is the floor function that yields the greatest integer less than or equal to x and " x " is the ceiling function that yields the least integer greater than or equal to x.
2
| E k ( N ) | is close to OEIS A000014 up to the eleventh term.
3
4
5
Figure 1. Numbers of all 2 N bitstrings (red), balanced bitstrings | B k ( N ) | (green), ringed bitstrings | R k ( N ) | (cyan), and balanced ringed bitstrings | E k ( N ) | (blue) as a function of the bitstring length N.
Figure 1. Numbers of all 2 N bitstrings (red), balanced bitstrings | B k ( N ) | (green), ringed bitstrings | R k ( N ) | (cyan), and balanced ringed bitstrings | E k ( N ) | (blue) as a function of the bitstring length N.
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Figure 2. Degree of causation as a function of 1 N 10 5 .
Figure 2. Degree of causation as a function of 1 N 10 5 .
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Figure 3. (a) Semi-log plot of 2 s (red), | N ngr | (green), and | N exc | (blue). (b) Fractions of | N ngr | and | N exc | to 2 s , showing the deflection point for s = 6 (see text for details).
Figure 3. (a) Semi-log plot of 2 s (red), | N ngr | (green), and | N exc | (blue). (b) Fractions of | N ngr | and | N exc | to 2 s , showing the deflection point for s = 6 (see text for details).
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Figure 4. Lower bound on the bitstring assembly index 2 (red) and log 2 ( N ) (red, dash-dot), conjectured upper bound on the bitstring assembly index 1 (green), factual values of the bitstring assembly index (blue) and the ringed bitstring assembly index (cyan) and N 1 (green, dash-dot), for the bitstring length 0 N 20 .
Figure 4. Lower bound on the bitstring assembly index 2 (red) and log 2 ( N ) (red, dash-dot), conjectured upper bound on the bitstring assembly index 1 (green), factual values of the bitstring assembly index (blue) and the ringed bitstring assembly index (cyan) and N 1 (green, dash-dot), for the bitstring length 0 N 20 .
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Figure 5. Lower bound on the bitstring assembly index (red), log 2 ( N ) (red, dash-dot), general a min ( N ˜ ) = s + 2 rule (cyan), and OEIS A014701 (yellow); conjectured upper bound on the bitstring assembly index (green) and N 1 (green, dash-dot); and assembly indices of C non - min ( N ) bitstrings assembled by trivial assembling programs (blue); for the bitstring length 0 N 100 (see text for details).
Figure 5. Lower bound on the bitstring assembly index (red), log 2 ( N ) (red, dash-dot), general a min ( N ˜ ) = s + 2 rule (cyan), and OEIS A014701 (yellow); conjectured upper bound on the bitstring assembly index (green) and N 1 (green, dash-dot); and assembly indices of C non - min ( N ) bitstrings assembled by trivial assembling programs (blue); for the bitstring length 0 N 100 (see text for details).
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Figure 6. An illustrative graph of complexity against information capacity: orange regions are impossible, as they are above or below the assembly bounds; yellow region contains structures optimally assembled (in equilibrium); green region contains dissipative structures; and red region is the region of human creativity (figure not to scale).
Figure 6. An illustrative graph of complexity against information capacity: orange regions are impossible, as they are above or below the assembly bounds; yellow region contains structures optimally assembled (in equilibrium); green region contains dissipative structures; and red region is the region of human creativity (figure not to scale).
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Figure 7. A black body object as a generator of an entropy variation shell (VS) through the solid angle Ω correspondence.
Figure 7. A black body object as a generator of an entropy variation shell (VS) through the solid angle Ω correspondence.
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Figure 8. Lower (red) and upper (green) bound on the number of APTs N 1 on a VS as a function of the information capacity of the generating BB [10].
Figure 8. Lower (red) and upper (green) bound on the number of APTs N 1 on a VS as a function of the information capacity of the generating BB [10].
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Figure 9. Lower (red) and upper (green) bounds on v R and lower (blue) and upper (cyan) bounds on v L as a function of l defining VS. Characteristic velocities are { 0 , 1 / 4 , 1 / 3 , 2 / 4 , 2 / 3 , 3 / 4 , 1 } , v L , v R R + .
Figure 9. Lower (red) and upper (green) bounds on v R and lower (blue) and upper (cyan) bounds on v L as a function of l defining VS. Characteristic velocities are { 0 , 1 / 4 , 1 / 3 , 2 / 4 , 2 / 3 , 3 / 4 , 1 } , v L , v R R + .
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Figure 10. Lower (red) and upper (green) bounds on the bitstring assembly index for the bitstring length N BB and log 2 ( N BB ) (blue), for 0 N BB 5 .
Figure 10. Lower (red) and upper (green) bounds on the bitstring assembly index for the bitstring length N BB and log 2 ( N BB ) (blue), for 0 N BB 5 .
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Figure 11. Black body object energy E BB (green); temperature T BH (red), Re [ T BB ( k eq ) ] (red, dash-dot), Re [ T BB ( k max ) ] (red, dash); and work W BH (blue), Re [ W BB ( k eq ) ] (blue, dash-dot), Re [ W BB ( k max ) ] (blue, dash),as a function of its information capacity N BB in terms of Planck units, for 0 N BB 5 .
Figure 11. Black body object energy E BB (green); temperature T BH (red), Re [ T BB ( k eq ) ] (red, dash-dot), Re [ T BB ( k max ) ] (red, dash); and work W BH (blue), Re [ W BB ( k eq ) ] (blue, dash-dot), Re [ W BB ( k max ) ] (blue, dash),as a function of its information capacity N BB in terms of Planck units, for 0 N BB 5 .
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Table 1. Distribution of the assembly indices for N = 4 .
Table 1. Distribution of the assembly indices for N = 4 .
N 1
a ( 4 ) ( C ) | a ( 4 ) ( C ) | 0 1 2 3 4
2 4 1 2 1
3 12 4 4 4
16 1 4 | B ( 4 ) | = 6 4 1
Table 2. | B ( 4 ) | = 6 balanced bitstrings B k ( 4 ) .
Table 2. | B ( 4 ) | = 6 balanced bitstrings B k ( 4 ) .
k B k ( 4 ) a ( 4 ) ( B k )
1 (0 1) (0 1) 2
2 (1 0) (1 0) 2
3 0 1 1 0 3
4 1 1 0 0 3
5 1 0 0 1 3
6 0 0 1 1 3
Table 3. Bitstring length N, number of all bitstrings 2 N , number of balanced bitstrings B k ( N ) , number of ringed bitstrings R k ( N ) , and number of balanced ringed bitstrings E k ( N ) .
Table 3. Bitstring length N, number of all bitstrings 2 N , number of balanced bitstrings B k ( N ) , number of ringed bitstrings R k ( N ) , and number of balanced ringed bitstrings E k ( N ) .
N 2 N | B k ( N ) | | R k ( N ) | | E k ( N ) | | B k ( N ) | / | E k ( N ) |
1 2 1 2 1 1
2 4 2 3 1 2
3 8 3 4 1 3
4 16 6 6 2 3
5 32 10 8 2 5
6 64 20 14 4 5
7 128 35 20 5 7
8 256 70 36 10 7
9 512 126 60 14 9
10 1024 252 108 26 9.6923
11 2048 462 188 42 11
12 4096 924 352 80 11.55
13 8192 1716 632 132 13
14 16384 3432 1182 246 13.9512
15 32768 6435 2192 429 15
Table 4. Distribution of assembly indices among balanced ringed bitstrings E ( N ) for 4 N 11 .
Table 4. Distribution of assembly indices among balanced ringed bitstrings E ( N ) for 4 N 11 .
N | E ( N ) | a ( N ) = 2 a ( N ) = 3 a ( N ) = 4 a ( N ) = 5 a ( N ) = 6 a ( N ) = 7 a ( N ) = 8
4 2 1 1
5 2 1 1
6 4 1 2 1
7 5 2 3
8 10 1 1 6 2
9 14 1 4 7 2
10 26 1 6 9 10
11 42 2 14 20 6
Table 5. The lower bound on the bitstring assembly index (OEIS A003313).
Table 5. The lower bound on the bitstring assembly index (OEIS A003313).
N 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
a min ( N ) 0 1 2 2 3 3 4 3 4 4 5 4 5 5 5 4 5 5 6 5 6
Table 6. List of the shortest addition chain sequence generating factors for 1 s 5 .
Table 6. List of the shortest addition chain sequence generating factors for 1 s 5 .
s 2 s The shortest addition chain sequence generating factors
1 2 1 1
2 4 1 2 3 1
3 8 1 3 3 2 5 1 7 1
4 16 1 4 3 3 5 2 7 2 9 1 11 1 13 1 15 1
5 32 1 5 3 4 5 3 7 3 9 2 11 2 13 2 15 2 17 1 19 1 21 1 23 1 25 1 27 1 29 1 31 1
Table 7. Number of exceptional a min ( N exc ) values | N exc | , and the number | N ngr | of a min ( N ngr ) not generated by general rules for 0 s 15 .
Table 7. Number of exceptional a min ( N exc ) values | N exc | , and the number | N ngr | of a min ( N ngr ) not generated by general rules for 0 s 15 .
s 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
| N exc | 0 0 0 0 2 9 30 80 193 432 925 1928 3953 8024 16189 32544
2 s 1 2 4 8 16 32 64 128 256 512 1024 2048 4096 8192 16384 32768
| N ngr | 0 0 0 1 7 21 51 113 239 493 1003 2025 4071 8165 16355 32737
min m k 13 13 7 7 7 7 7 7 7 7 7 7
Table 8. Exemplary balanced bitstrings B max ( N ) that have a largest assembly index. Conjectured ( a conj ( N ) ) form of the largest assembly index and its factual values for ringed ( a rng ( N ) ) and non-ringed ( a nrng ( N ) ) bitstrings (red if below the conjectured value, green if above).
Table 8. Exemplary balanced bitstrings B max ( N ) that have a largest assembly index. Conjectured ( a conj ( N ) ) form of the largest assembly index and its factual values for ringed ( a rng ( N ) ) and non-ringed ( a nrng ( N ) ) bitstrings (red if below the conjectured value, green if above).
N B max ( N ) a conj ( N ) a rng ( N ) a nrng ( N )
1 0 0 0 0
2 1 0 1 1 1
3 0 0 1 2 2 2
4 0 0 1 1 3 3 3
5 0 0 0 1 1 4 4 4
6 0 0 0 1 1 1 5 5 5
7 0 0 1 1 1 0 0 5 5 6
8 0 0 0 1 0 1 1 1 6 6 6
9 0 0 0 0 1 1 1 0 1 7 7 7
10 0 0 0 0 1 1 1 1 0 1 7 7 8
11 0 0 0 0 0 1 0 1 1 1 1 8 8 8
12 1 1 1 0 0 0 1 0 1 1 0 0 9 8 8
13 0 0 0 0 0 0 1 0 1 1 1 1 1 9 9 9
14 0 0 0 0 0 1 0 1 0 1 1 1 1 1 9 9 9
15 0 0 0 0 0 1 0 1 0 1 1 1 1 1 0 10 10 10
16 1 0 0 0 0 0 0 1 0 1 0 1 1 1 1 1 11 10 10
17 0 0 0 0 0 0 1 0 1 0 1 1 1 1 1 1 0 11 11 11
18 1 0 0 1 1 1 1 1 0 1 1 0 0 0 0 0 1 0 11 11 12
19 1 0 0 0 0 1 0 1 0 1 0 0 1 1 1 1 1 0 1 12 11 12
20 1 0 1 0 0 1 1 1 1 1 0 1 1 0 0 0 0 0 1 0 13 12 13
Table 9. 3-bit elegant programs assembling bitstrings with a ( N ) = 3 .
Table 9. 3-bit elegant programs assembling bitstrings with a ( N ) = 3 .
Q C ( s = 1 ) C ( s = 2 ) C ( s Q = 3 ) N
11 0 0 0 00 0 5
10 0 0 0 0 00 0 6
01 0 0 0 0 0 0 6
00 0 0 0 0 0 0 0 8
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