Search Subject Areas | Preprints.org

Preprint ARTICLE | doi:10.20944/preprints202005.0181.v1

Modeling an Inverted Pendulum via Differential Equations and Reinforcement Learning Techniques

Siddharth Sharma

Subject: Computer Science And Mathematics, Mathematics Keywords: Reinforcement learning; Cartpole; Q Learning; Mathematical Modeling

Online: 10 May 2020 (18:02:43 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201712.0119.v1

Numerical Solution of First Order Linear Differential Equations in Fuzzy Environment by Modified Runge-Kutta- Method and Runga-Kutta-Merson-Method under generalized H-differentiability and its Application in Industry

Sankar Prasad Mondal, Susmita Roy, Biswajit Das, Animesh Mahata

Subject: Computer Science And Mathematics, Mathematics Keywords: fuzzy sets; fuzzy differential equation; modified runge kutta method and runge kutta mersion method

Online: 18 December 2017 (10:23:51 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201909.0154.v1

A QUBO Model for the Traveling Salesman Problem with Time Windows for Execution on the D-Wave

Christos Papalitsas, Theodore Andronikos, Konstantinos Giannakis, Georgia Theocharopoulou, Sofia Fanarioti

Subject: Computer Science And Mathematics, Mathematics Keywords: TSP; TSPTW; metaheuristics; quantum annealing; Ishing model; QUBO; D-Wave

Online: 15 September 2019 (16:14:15 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201610.0064.v1

Optimize Siteation the Tower Crane Using a Mathematical Models

Peyman Beiranvand, Hamid Reza Ashrafi, Fereydoon Omidinasab, Amir Alipour

Subject: Computer Science And Mathematics, Mathematics Keywords: tower crane; location; operating time; feasible area

Online: 15 October 2016 (08:50:41 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202004.0073.v1

SEIR Modeling of the Italian Epidemic of SARS-CoV-2

Alberto Godio, Francesca Pace, Andrea Vergnano

Subject: Computer Science And Mathematics, Mathematics Keywords: SARS-CoV-2; COVID-19; SEIR modeling; Italy; stochastic modeling; swarm intelligence

Online: 7 April 2020 (01:13:15 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201612.0013.v1

Trigonometric Cubic B-spline Collocation Method for Solitons of the Klein-Gordon Equation

Alper Korkmaz, Ozlem Ersoy, Idiris Dag

Subject: Computer Science And Mathematics, Mathematics Keywords: Klein-Gordon equation; trigonometric cubic B-spline; collocation; soliton; wave motion; conservation laws

Online: 2 December 2016 (08:45:07 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202002.0466.v1

A Note on the Representation of Clifford Algebra

Ying-Qiu Gu

Subject: Computer Science And Mathematics, Mathematics Keywords: Clifford algebra; Pauli matrix; gamma matrix; matrix representation

Online: 29 February 2020 (12:52:32 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201801.0020.v1

Mellin Convolution and its Extensions, Perron Formula and Explicit Formulae

Jose Javier Garcia Moreta

Subject: Computer Science And Mathematics, Mathematics Keywords: Riemann-weil formula; perron formula; explicit formulae; Riemann zeros

Online: 3 January 2018 (05:07:10 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202007.0266.v1

Revisiting the 1D and 2D Laplace Transforms

Manuel Duarte Ortigueira, José Tenreiro Machado

Subject: Computer Science And Mathematics, Mathematics Keywords: Laplace transform; Two-dimensional Laplace transform; Initial-conditions; Two-dimensional linear systems

Online: 12 July 2020 (15:46:45 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201910.0137.v1

An Efficient and High-Resolution Topology Optimization Method Based on Convolutional Neural Networks

Liang Xue, Jie Liu, Guilin Wen, Hongxin Wang

Subject: Computer Science And Mathematics, Mathematics Keywords: topology optimization; convolutional neural network; high-resolution

Online: 12 October 2019 (03:56:19 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201704.0105.v1

A Robust Symmetric Nonnegative Matrix Factorization Framework for Clustering Multiple Heterogeneous Microbiome Data

Yuanyuan Ma, Xiaohua Hu, Tingting He, Xingpeng Jiang

Subject: Computer Science And Mathematics, Mathematics Keywords: symmetric nonnegative matrix factorization; similarity network fusion; human microbiome; multi-view clustering

Online: 18 April 2017 (03:31:04 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201706.0090.v1

Existence results of solutions for some fractional neutral functional integro-differential equations with infinite delay

Kazem Nouri, Marjan Nazari, Bagher Keramati

Subject: Computer Science And Mathematics, Mathematics Keywords: fractional neutral integro-differential equations; initial value problem; Caputo fractional derivative; Krasnoselskii's fixed point theorem

Online: 20 June 2017 (03:42:54 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201610.0039.v1

Numerical Simulation of a Vortex Combustor Based on Aluminum and Steam

Xianhe Chen, Zhixun Xia, Liya Huang, Likun Ma

Subject: Computer Science And Mathematics, Mathematics Keywords: aluminum particle; steam; vortex combustor; diffusion flame; numerical simulation

Online: 12 October 2016 (10:11:48 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201810.0018.v1

A Weno-Tvd Implementation for Solving Some Problems of Hyperbolic Conservation Laws

Jhon Alberto Polo Vásquez, Miguel Antonio Caro Candezano

Subject: Computer Science And Mathematics, Mathematics Keywords: CENTRAL WENO-TVD, hyperbolic conservation laws, volume finite framework, The Lax-Friedrichs and TVD fluxes, flux limiter-schemes, Runge-Kutta TVD

Online: 1 October 2018 (16:42:27 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201611.0009.v1

A New Consequence Of Van Aubel’s Theorem

Dasari Naga Vijay Krishna

Subject: Computer Science And Mathematics, Mathematics Keywords: van Aubel’s theorem; iso Ortho Diagonal Quadrilateral; equilateral triangle

Online: 1 November 2016 (10:08:03 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202102.0559.v1

Euler-Bernoulli Beam Theory: First-Order Analysis, Second-Order Analysis, Stability, and Vibration Analysis Using the Finite Difference Method

Valentin Fogang

Subject: Computer Science And Mathematics, Mathematics Keywords: Euler Bernoulli beam; finite difference method; additional points; element stiffness matrix; tapered beam; first-order analysis; second-order analysis; vibration analysis; direct time integration method

Online: 24 February 2021 (17:03:09 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints201608.0129.v1

The Analytical Solution of Parabolic Volterra Integro- Differential Equations in the Infinite Domain

Yun Zhao, Feng-Qun Zhao

Subject: Computer Science And Mathematics, Mathematics Keywords: parabolic Volterra integro-differential equations; memory kernel; Laplace transform; Fourier transform; convolution theorem; analytical solution

Online: 11 August 2016 (11:47:10 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201608.0017.v4

Propositions for Confidence Interval in Systematic Sampling on Real Line

Mehmet Niyazi Çankaya

Subject: Computer Science And Mathematics, Mathematics Keywords: biomedical imaging; covariogram; design-based stereology; estimation of volume; systematic sampling

Online: 15 September 2016 (05:18:42 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201607.0018.v1

New algorithm for problems with exponential solutions

Olaide Adesanya, Oziohu Onsachi, Remilekun Odekunle

Subject: Computer Science And Mathematics, Mathematics Keywords: Exponentially-fitted method, interpolation, collocation, stability properties, continuous method, stiff problems

Online: 11 July 2016 (08:15:27 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201804.0305.v1

The Zeros of the Dirichlet Beta Function Encode the Odd Primes and Have Real Part 1/2

Anthony Lander

Subject: Computer Science And Mathematics, Mathematics Keywords: Catalan beta function; Riemann’s zeta function; primes; Dirichlet L-function

Online: 24 April 2018 (05:10:20 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201612.0015.v1

VRP-GMRES(m) Iteration Algorithm for Fast Multipole Boundary Element Method

Chunxiao Yu, Cuihuan Ren, Xueting Bai

Subject: Computer Science And Mathematics, Mathematics Keywords: FM-BEM; variable restart parameter; GMRES(m); error vector projection; convergence

Online: 2 December 2016 (09:01:51 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201701.0060.v1

Quasi-Interpolation Operators for Bivariate Quintic Spline Spaces and Their Applications

Rengui Yu, Chungang Zhu, Xianmin Hou, Li Yin

Subject: Computer Science And Mathematics, Mathematics Keywords: bivariate spline space; quasi-interpolation operator; type-2 triangulation 3; burgers’ equations; image reconstruction

Online: 12 January 2017 (10:04:06 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints201712.0097.v1

Recent Advances of Malaria Parasites Detection Systems Based on Mathematical Morphology

Andrea Loddo, Cecilia Di Ruberto, Michel Kocher

Subject: Computer Science And Mathematics, Mathematics Keywords: malaria; red blood cells segmentation; mathematical morphology; medical image analysis

Online: 14 December 2017 (17:10:19 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints201705.0194.v1

A Brief History of Long Memory: Hurst, Mandelbrot and the Road to ARFIMA

Timothy Graves, Robert B. Gramacy, Nicholas W. Watkins, Christian L. E. Franzke

Subject: Computer Science And Mathematics, Mathematics Keywords: long-range dependence; Hurst effect; fractionallydifferenced models; Mandelbrot

Online: 26 May 2017 (18:36:50 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201704.0176.v1

Bézier Curve Modeling for Neutrosophic Data Problem

Ferhat Taş, Selçuk Topal

Subject: Computer Science And Mathematics, Mathematics Keywords: neutrosophic sets; neutrosophic logic; bézier curve

Online: 27 April 2017 (02:54:02 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201703.0121.v2

Two Finite Mirror-Image Series Restrict the Non-Trivial Zeros of Riemann’s Zeta Function to Re(s) = 1/2 and the Zeros of its Derivative to Re(s) > 1/2

Anthony Lander

Subject: Computer Science And Mathematics, Mathematics Keywords: Riemann Hypothesis; Dirichlet eta function; Zeta function; prime numbers; number theory; critical-line; critical-strip; symmetry breaking

Online: 22 March 2017 (04:48:57 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201712.0183.v1

Sine-Gordon Expansion Method for Exact Solutions to Conformable Time Fractional Equations in RLW-Class

Alper Korkmaz, Ozlem Ersoy Hepson, Kamyar Hosseini, Hadi Rezazadeh, Mostafa Eslami

Subject: Computer Science And Mathematics, Mathematics Keywords: Sine-Gordon Expansion Method; conformable time fractional RLW equation; conformable time fractional modified RLW equation; conformable time fractional symmetric-RLW equation

Online: 26 December 2017 (04:50:06 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201704.0044.v1

Approximate Information and Accelerating for High-throughput Heterogeneous Data Analysis with Linear Mixed Models

Shengxin Zhu

Subject: Computer Science And Mathematics, Mathematics Keywords: observed information; fisher information; averaged information splitting; approximate information

Online: 7 April 2017 (12:21:27 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201806.0148.v1

Normal Calculus on Moving Surfaces

Keith C. Afas

Subject: Computer Science And Mathematics, Mathematics Keywords: calculus of moving surfaces; CMS; differential geometry; normal; tensor; hypersurfaces; dynamic

Online: 11 June 2018 (09:54:25 CEST)

Show abstract| Download PDF| Share

Preprint ESSAY | doi:10.20944/preprints202210.0209.v1

Arzela-Ascoli's Theorem and Applications

Chaoyi Sheng

Subject: Computer Science And Mathematics, Mathematics Keywords: Arzela-Ascoli's theorem; functional analysis; topology

Online: 14 October 2022 (10:13:19 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201901.0272.v1

Research on Heat Transfer Dynamic Characteristics of Composite Layer Based on Laplace Transform

Chunyu Xu, Junhua Lin, Wenhao Liu, Yuanbiao Zhang

Subject: Computer Science And Mathematics, Mathematics Keywords: Flourier law of heat transfer; Temperature distribution; Laplace transform

Online: 28 January 2019 (09:49:47 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201707.0006.v1

Forecasting Based on High-Order Fuzzy-Fluctuation Trends and Particle Swarm Optimization Machine Learning

Jingyuan Jia, Aiwu Zhao, Shuang Guan

Subject: Computer Science And Mathematics, Mathematics Keywords: Fuzzy forecasting, fuzzy-fluctuation trend, particle swarm optimization, fuzzy time series, fuzzy logical relationship

Online: 4 July 2017 (16:35:22 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201608.0017.v3

Propositions for Confidence Interval in Systematic Sampling on Real Line

Mehmet Niyazi Çankaya

Subject: Computer Science And Mathematics, Mathematics Keywords: biomedical imaging; covariogram; design-based stereology; estimation of volume; systematic sampling

Online: 9 September 2016 (11:52:36 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201707.0088.v1

Secure Communication for Two-way Relay Networks with Imperfect CSI

Cong Sun, Ke Liu, Dahu Zheng, Wenbao Ai

Subject: Computer Science And Mathematics, Mathematics Keywords: physical layer security; semi-infinite programming; amplify-and-forward two-way relay; imperfect CSI; robust optimization

Online: 31 July 2017 (08:59:04 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201703.0171.v1

Specific and Complete Local Integration of Patterns in Bayesian Networks

Martin Biehl, Takashi Ikegami, Daniel Polani

Subject: Computer Science And Mathematics, Mathematics Keywords: identity over time; Bayesian networks; multi-information; entity; persistence; integration; emergence; naturalising agency

Online: 21 March 2017 (16:23:00 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202009.0196.v1

Numerical Approximation of the SEIR Epidemic Model Using the Variational Iteration Orthogonal Collocation Method and Mamadu-Njoseh Polynomials

Ebimene J. Mamadu, Ignatius N. Njoseh, Newton I. Okposo, Herietta I. Ojarikre, John N. Igabari, Peter E. Ezimadu, Marcus I. Ossaiugbo, Abel M. Jonathan

Subject: Computer Science And Mathematics, Mathematics Keywords: orthogonal collocation; variational iteration method; mamadu-njoseh polynomials; differential equations; corona virus; SEIR model

Online: 9 September 2020 (03:42:20 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201801.0277.v1

Numerical Counterexamples of Lorenz System in Implicit Time Scheme

Xuan Chen

Subject: Computer Science And Mathematics, Mathematics Keywords: Lorenz system; implicit time scheme; counterexamples

Online: 30 January 2018 (04:38:31 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201712.0116.v1

A Note on the (p, q)-Hermite Polynomials

Ugur Duran, Mehmet Acikgoz, Ayhan Esi, Serkan Araci

Subject: Computer Science And Mathematics, Mathematics Keywords: (p, q)-calculus; hermite polynomials; bernstein polynomials; generating function; hyperbolic functions

Online: 18 December 2017 (08:32:22 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202102.0559.v3

Euler-Bernoulli Beam Theory: First-Order Analysis, Second-Order Analysis, Stability, and Vibration Analysis Using the Finite Difference Method

Valentin Fogang

Subject: Computer Science And Mathematics, Mathematics Keywords: Euler Bernoulli beam; finite difference method; additional points; element stiffness matrix; tapered beam; first-order analysis; second-order analysis; vibration analysis; direct time integration method

Online: 23 September 2021 (13:08:38 CEST)

Show abstract| Download PDF| Supplementary Files| Share

This paper presents an approach to the Euler-Bernoulli beam theory (EBBT) using the finite difference method (FDM). The EBBT covers the case of small deflections, and shear deformations are not considered. The FDM is an approximate method for solving problems described with differential equations. The FDM does not involve solving differential equations; equations are formulated with values at selected points of the structure. Generally, the finite difference approximations are derived based on fourth-order polynomial hypothesis (FOPH) and second-order polynomial hypothesis (SOPH) for the deflection curve; the FOPH is made for the fourth and third derivative of the deflection curve while the SOPH is made for its second and first derivative. In addition, the boundary conditions and not the governing equations are applied at the beam’s ends. In this paper, the FOPH was made for all of the derivatives of the deflection curve, and additional points were introduced at the beam’s ends and positions of discontinuity (concentrated loads or moments, supports, hinges, springs, etc.). The introduction of additional points allowed us to apply the governing equations at the beam’s ends and to satisfy the boundary and continuity conditions. Moreover, grid points with variable spacing were also considered, the grid being uniform within beam segments. First-order analysis, second-order analysis, and vibration analysis of structures were conducted with this model. Furthermore, tapered beams were analyzed (element stiffness matrix, second-order analysis). Finally, a direct time integration method (DTIM) was presented. The FDM-based DTIM enabled the analysis of forced vibration of structures, with damping taken into account. The results obtained in this paper showed good agreement with those of other studies, and the accuracy was increased through a grid refinement. Especially in the first-order analysis of uniform beams, the results were exact for uniformly distributed and concentrated loads regardless of the grid. Further research will be needed to investigate polynomial refinements (higher-order polynomials such as fifth-order, sixth-order…) of the deflection curve; the polynomial refinements aimed to increase the accuracy, whereby non-centered finite difference approximations at beam’s ends and positions of discontinuity would be used.

Preprint ARTICLE | doi:10.20944/preprints201802.0141.v1

Hyperbolic Tangent Ansatz Method to Space Time Fractional Modified KdV, Modified EW and Benney–Luke Equations

Ozlem Ersoy Hepson

Subject: Computer Science And Mathematics, Mathematics Keywords: Ansatz method; fractional modified Korteweg–de Vries Equation; fractional modified Equal Width Equation; fractional Benney–Luke Equation; Conformable fractional derivative

Online: 22 February 2018 (10:45:02 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201710.0146.v1

NC-TODIM Based MAGDM under Neutrosophic Cubic Set Environment

Surapati Pramanik, Shyamal Dalapati, Shariful Alam, Tapan Kumar Roy

Subject: Computer Science And Mathematics, Mathematics Keywords: neutrosophic cubic set; single valued neutrosophic set; interval neutrosophic set; multi attribute group decision making; TODIM method; NC-TODIM

Online: 23 October 2017 (04:53:57 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201711.0072.v1

On Some New Properties of the Fundamental Solution to the Multi-Dimensional Space- and Time-Fractional Diffusion-Wave Equatio

Yuri Luchko

Subject: Computer Science And Mathematics, Mathematics Keywords: multi-dimensional diffusion-wave equation; neutral-fractional diffusion-wave equation; fundamental solution; Mellin-Barnes integral; integral representation; Wright function; generalized Wright function

Online: 12 November 2017 (08:30:34 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201801.0230.v1

Multi-swarm PSO Algorithm for the Quadratic Assignment Problem: A Massively Parallel Implementation on the OpenCL Platform

Piotr Szwed, Wojciech Chmiel

Subject: Computer Science And Mathematics, Mathematics Keywords: QAP, PSO, OpenCL, GPU calculation, particle swarm optimization, multi-swarm, discrete optimization

Online: 24 January 2018 (19:04:47 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints201801.0018.v1

Complex Wave Solutions to Mathematical Biology Models I: Newell-Whitehead-Segel and Zeldovich Equations

Alper Korkmaz

Subject: Computer Science And Mathematics, Mathematics Keywords: reaction-diffusion equations; Newell-Whitehead-Segel equation; Zeldovich equation; exact solution; traveling wave solution

Online: 3 January 2018 (03:34:43 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201712.0188.v1

On The Exact Solutions to Conformable Time Fractional Equations in EW Family Using Sine-Gordon Equation Approach

Alper Korkmaz, Ozlem Ersoy Hepson, Kamyar Hosseini, Hadi Rezazadeh, Mostafa Eslami

Subject: Computer Science And Mathematics, Mathematics Keywords: sine-gordon expansion method; conformable time fractional EW equation; conformable time fractional modified EW Equation; exact solution; traveling solution

Online: 27 December 2017 (04:00:25 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201703.0121.v1

Two Finite Mirror-Image Series Restrict the Non-Trivial Zeros of Riemann’s Zeta Function to Re(s) = 1/2 and the Zeros of its Derivative to Re(s) > 1/2

Anthony Lander

Subject: Computer Science And Mathematics, Mathematics Keywords: Riemann Hypothesis; Dirichlet eta function; Zeta function; prime numbers; number theory; critical-line; critical-strip; symmetry breaking

Online: 16 March 2017 (16:59:29 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202104.0519.v1

New Insight into Quaternions and Their Matrices

Gülsüm Yeliz Şentürk, Nurten Gürses, Salim Yüce

Subject: Computer Science And Mathematics, Mathematics Keywords: Generalized quaternion, generalized complex number, matrix representation.

Online: 19 April 2021 (22:00:00 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201808.0205.v1

Optimal Path for Sustainable Retirement System in Malaysia

Sim Ying Run, Adem Kilicman

Subject: Computer Science And Mathematics, Mathematics Keywords: Sustainable; defined-contribution; optimisation; present value; future value

Online: 10 August 2018 (13:03:40 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202005.0499.v1

Understanding the Spread of COVID-19 in Japan: Preliminary Results from a System Dynamics Model

Takuro Uehara

Subject: Computer Science And Mathematics, Mathematics Keywords: COVID-19; SARS-CoV-2; System dynamics; Japan; SEIR

Online: 31 May 2020 (19:58:23 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints201807.0405.v1

Heronian Means as Aggregation Operators for Multi-Attribute Decision Making Applications

Xiaopu Shang, Jun Wang, Anupam Nanda, Weizi Li

Subject: Computer Science And Mathematics, Mathematics Keywords: interval-valued intuitionistic fuzzy set; aggregation operator; Heronian mean; geometric Heronian mean; multi-attribute decision making

Online: 23 July 2018 (05:29:46 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201801.0178.v1

On Transcendental Numbers: New Results and a Little History

Solomon Marcus, Florin F. Nichita

Subject: Computer Science And Mathematics, Mathematics Keywords: Euler's relation; transcendental numbers; transcendental operations / functions; transcendence; Yang-Baxter equation; hyperbolic functions, logical implication

Online: 19 January 2018 (04:07:39 CET)

Show abstract| Download PDF| Share

Working Paper ARTICLE

A New Generalization of Fibonacci and Lucas Type Sedenions

Can Kızılateş, Selihan Kırlak

Subject: Computer Science And Mathematics, Mathematics Keywords: Sedenion algebra; Horadam number; q-integer; Binet-Like formula; exponential generating function

Online: 8 March 2020 (05:03:31 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201712.0178.v1

An Expansion Based on Sine-Gordon Equation to Solve KdV and modified KdV Equations in Conformable Fractional Forms

Ozlem Ersoy Hepson, Alper Korkmaz, Kamyar Hosseini, Hadi Rezazadeh, Mostafa Eslami

Subject: Computer Science And Mathematics, Mathematics Keywords: sine-gordon expansion method; conformable time fractional KdV equation; conformable time fractional modified KdV equation; exact solution, traveling wave solution

Online: 25 December 2017 (10:31:11 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201806.0065.v1

Umbral Methods and Harmonic Numbers

Giuseppe Dattoli, Bruna Germano, Silvia Licciardi, Maria Renata Martinelli

Subject: Computer Science And Mathematics, Mathematics Keywords: harmonic numbers; operators; umbral methods; special functions; Hermite polynomials

Online: 5 June 2018 (11:52:13 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202105.0762.v1

Real-Time Smoke Simulation based on Vortex Method

Fei Wan, Jingpu Zhang, Lizheng Guo, Yunchang Liu

Subject: Computer Science And Mathematics, Mathematics Keywords: smoke simulation; vortex method; Vortex-In-Cell (VIC)

Online: 31 May 2021 (12:11:04 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.3390/sci2030058

Mathematics and Poetry • Unification, Unity, Union

Florin Nichita

Subject: Computer Science And Mathematics, Mathematics Keywords: Yang–Baxter equation (QYBE); Euler’s formula; dual numbers; UJLA structures; classical means inequalities; poetry

Online: 3 August 2020 (00:00:00 CEST)

Show abstract| Share

Preprint ARTICLE | doi:10.20944/preprints201805.0341.v1

On a Class of Hermite-Obrechkoff One-Step Methods with Continuous Spline Extension

Francesca Mazzia, Alessandra Sestini

Subject: Computer Science And Mathematics, Mathematics Keywords: Initial Value Problems; One-step Methods; Hermite-Obrechkoff methods; symplecticity; B–Splines; BS Methods

Online: 24 May 2018 (08:33:58 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202105.0125.v1

A New Iterative Scheme for Approximation of Fixed Points of Suzuki's Generalized Nonexpansive Mappings

Shivam Rawat, Ramesh Chandra Dimri, Ayush Bartwal

Subject: Computer Science And Mathematics, Mathematics Keywords: Uniformly convex Banach space; Iteration process; Suzuki's generalized nonexpansive mapping; weak convergence; Strong convergence

Online: 7 May 2021 (09:05:49 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202106.0634.v1

Unsupervised Classification of Hyperspectral Images using PCA and K-Means

Ayesha Malik, Mamoona Waheed

Subject: Computer Science And Mathematics, Mathematics Keywords: Hyperspectral image; HSI; PCA; K-means clustering; unsupervised; classification; bands; satellite; ROSIS; AVIRIS

Online: 28 June 2021 (10:01:41 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202104.0076.v2

On the Indian Tradition of Mathematical Names: A Scientific Analysis

Ashish Karn, Brett Rosiejka, Pankaj Badoni, Raman Kumar Singh

Subject: Computer Science And Mathematics, Mathematics Keywords: Mathematical names; Hindu mathematical tradition; Indian social psyche; Mathematics and religion; Mathematics and society; Hindu mathematics

Online: 5 April 2021 (14:42:47 CEST)

Show abstract| Download PDF| Share

The current paper explores the potential interlink between names of individuals in a society and its collective social consciousness, particularly with reference to the pervasive occurrence of the ‘mathematical names’ in the current Hindu society in the Indian subcontinent and beyond. Initially, an attempt is made to put things into mathematical perspective by drawing a quick sketch of some of the stellar achievements of the Indian mathematicians. Under the six broad categories of geometry, trigonometry, numeration, arithmetic, algebra, and mathematics in the Vedic tradition, a concise simple description of these subdivisions is presented, underlining the names of the concepts and terms, sometimes by producing the textual references. Then, upon identification of such mathematical terms, an attempt is made to juxtapose these with the names current in the Indian Hindu society. By employing an extensive dataset of university student names in India and the directories of Facebook and LinkedIn, we produce both qualitative and quantitative evidence of the presence of such names in the Indian subcontinent. Evidently, these names reflect the impressions of the tremendously rich mathematical heritage left by the Hindu stalwart mathematicians. This hypothesis has also been examined by taking surveys of people bearing these mathematical names, as well as by documenting the ‘conscious procedures’ that go behind the naming of a Hindu Indian child. In trying to investigate if such a phenomenon is unique to the Indian tradition, a stark contrast with the ‘names in mathematics’ as prevalent in the European mathematical traditions is presented, as cultural roots of mathematics are explored. Further, we ascribe the presence of these names as the extant remains of the colossal impact of multifarious mathematical traditions existing in India. Interestingly, the present research also brings to the fore, certain unseen facets of the Indian Hindu society as regards the education of mathematics to women – through an indirect exploration of their names. We also show that the pervasive occurrence of these names is not merely the result of semantic chance events, but denotes the richness of the Indian mathematical legacy. Next, we also present cross-cultural comparisons to show the uniqueness of Indian mathematical and scientific traditions that led to the pervasiveness of ‘mathematical names’ in India. Finally, an attempt is made to clarify some subtle points on the associations between mathematics and religion in India and other cultures of the world. It is sincerely hoped that the present study may shed light on the cultural roots of mathematics and may furnish a new dimension in the study of mathematics, culture and civilizations across the world.

Preprint ARTICLE | doi:10.20944/preprints201708.0036.v1

Fuzzy Analogues of Sets and Functions Can Be Uniquely Determined from the Corresponding Ordered Category: A Theorem

Christian Servin, Gerardo Muela, Vladik Kreinovich

Subject: Computer Science And Mathematics, Mathematics Keywords: fuzzy set; ordered category; category of fuzzysets

Online: 9 August 2017 (06:39:47 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202008.0156.v1

A Proof of the Riemann Hypothesis Based on Hadamard Product

Fayez Alhargan

Subject: Computer Science And Mathematics, Mathematics Keywords: the Riemann Hypothesis; the functional equation; the Riemann zeta function; Hadamard Product

Online: 6 August 2020 (10:38:36 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201712.0016.v1

Hypo-q-Norms on Cartesian Products of Algebras of Bounded Linear Operators on Hilbert Spaces

Silvestru Sever Dragomir

Subject: Computer Science And Mathematics, Mathematics Keywords: Hilbert spaces; bounded linear operators; operator norm and numerical radius; n-tuple of operators; operator inequalities

Online: 4 December 2017 (05:43:58 CET)

Show abstract| Download PDF| Share

Working Paper ARTICLE

HASPO: Harmony Search-based Parameter Optimization for Just-in-Time Software Defect Prediction in the Maritime Software

Jonggu Kang, Sunjae Kwon, Duksan Ryu, Jongmoon Baik

Subject: Computer Science And Mathematics, Mathematics Keywords: harmony search; meta-heuristic; parameter optimization; software defect prediction; just-in-time prediction; software quality assurance; maintenance; maritime transportation

Online: 31 December 2020 (09:27:46 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201908.0078.v1

A Modified Free Wake Vortex Ring Method for Horizontal-Axis Wind Turbines

Jing Dong, Axelle Viré, Carlos Simao Ferreira, Zhangrui Li, Gerard van Bussel

Subject: Computer Science And Mathematics, Mathematics Keywords: free wake vortex method, horizontal-axis wind turbine, floating wind energy, aerodynamics

Online: 6 August 2019 (12:48:36 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201805.0233.v1

Performance Evaluation of Relay Selection Schemes in Beacon-Assisted Dual-hop Cognitive Radio Wireless Sensor Networks under Impact of Hardware Noises

Tran Dinh Hieu, Tran Trung Duy, Le The Dung, Seong Gon Choi

Subject: Computer Science And Mathematics, Mathematics Keywords: energy harvesting; power beacon; decode-and-forward (DF); partial relay selection; opportunistic relay selection; underlay cognitive radio; hardware impairments

Online: 16 May 2018 (11:35:57 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201806.0207.v1

M-Polynomials and Degree-Based Topological Indices of Bismuth Tri-Iodide

Young Chel Kwun, Abaid ur Rehman Virk, Waqas Nazeer, Shin Min Kang

Subject: Computer Science And Mathematics, Mathematics Keywords: topological index; Bismuth Tri-Iodide; molecular graph; Zagreb index; Randic index; M-polynomial

Online: 13 June 2018 (10:39:15 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202003.0118.v1

Interval-Valued Vector Optimization Problems Involving Generalized Approximate Convexity

Mohsine Jennane, Lhoussain El Fadil, El Mostafa Kalmoun

Subject: Computer Science And Mathematics, Mathematics Keywords: interval-valued vector optimization problems; generalized approximate LU-convexity; interval vector variational inequalities; LU-efficient solutions

Online: 7 March 2020 (08:52:27 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202103.0702.v1

On Analytic Multivalent Function Associated with Cosine Hyperbolic Function

AZAM MUHAMMAD

Subject: Computer Science And Mathematics, Mathematics Keywords: Multivalent functions, Janowski function, Trigonometric functions

Online: 29 March 2021 (14:49:08 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201811.0367.v1

Some Bounds on Eigenvalues of the Hadamard Product and the Fan Product of Matrices

Qianping Guo, Jinsong Leng, Houbiao Li, Carlo Cattani

Subject: Computer Science And Mathematics, Mathematics Keywords: Hadamard product; Nonnegative matrices; Spectral radius; Fan product; M-matrix; Inverse $M$-matrix; Minimum eigenvalue

Online: 15 November 2018 (15:34:44 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201712.0136.v1

Hypo-q-Norms on a Cartesian Product of Algebras of Operators on Banach Spaces

Silvestru Sever Dragomir

Subject: Computer Science And Mathematics, Mathematics Keywords: normed spaces; cartesian products of normed spaces; inequalities; reverse inequalities; shisha-mond type inequalities

Online: 19 December 2017 (10:31:23 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202212.0277.v1

A Numerical Quadrature Solution for Time Period of Simple Pendulum Under Magnetic Action

Bawar Mohammed Faraj, Viyan Jamal Jalal, Bnar Hama Zaman Hama Ali, Dana Taha Mohammed Salih, Shewa Abid Hama, Sarkhel Akbar Mahmood, Sarkew Salah Abdulkareem, Bahadin Muhammad Hussien

Subject: Computer Science And Mathematics, Mathematics Keywords: Simple Pendulum; Time Period; Magnetic Action; Numerical Integration; Error Analysis

Online: 15 December 2022 (08:57:20 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201809.0083.v1

Mean-Field Type Games between Two Players Driven by Backward Stochastic Differential Equations

Alexander Aurell

Subject: Computer Science And Mathematics, Mathematics Keywords: mean-field type game; non-zero-sum differential game; cooperative game; backward stochastic differential equations; linear-quadratic stochastic control; social cost; price of anarchy

Online: 5 September 2018 (04:59:41 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202211.0011.v1

Reinforcement Learning-based Wi-Fi Contention Window Optimization

Sheila C. da S. Cruz, Messaoud Ahmed Ouameur, Felipe A. P. de Figueiredo

Subject: Computer Science And Mathematics, Mathematics Keywords: Wi-Fi; contention-based access scheme; channel utilization optimization; machine learning; reinforcement learning; NS-3, NS3-gym

Online: 1 November 2022 (02:39:05 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201904.0179.v1

A New Representation of Extended Mittage-Leffler Function and Its Properties

Abdul Ghaffar, Ayesha Saif, Faheem Khan

Subject: Computer Science And Mathematics, Mathematics Keywords: Mittag-Leffler function; extended Mittag-Leffler function; Extended beta function; Fox Wright function

Online: 16 April 2019 (10:36:23 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201808.0038.v1

Numerical and Non-Asymptotic Analysis of Elias’s and Peres’s Extractors with Finite Input Sequence

Amonrat Prasitsupparote, Norio Konno, Junji Shikata

Subject: Computer Science And Mathematics, Mathematics Keywords: true random number generation; von Neumann’s extractor; Peres’s extractor; Elias’s extractor

Online: 2 August 2018 (07:58:37 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201912.0181.v1

Serial and Parallel Iterative Splitting Methods: Algorithms and Applications

Juergen Geiser, Eulalia Martínez, José L. Hueso

Subject: Computer Science And Mathematics, Mathematics Keywords: Multisplitting method; iterative splitting method; numerical analysis; operator-splitting method; initial value problem; iterative solver method; Waveform relaxation method.

Online: 13 December 2019 (10:45:22 CET)

Show abstract| Download PDF| Share

Working Paper ARTICLE

Multi-Criteria Decision-Making Techniques for Solving the Airport Ground Handling Service Equipment Vendor Selection Problem

Peng Yen-Ting, Shen Chien-Wen, Tu Chang-Shu

Subject: Computer Science And Mathematics, Mathematics Keywords: equipment vendor selection; fuzzy TOPSIS; fuzzy weighted average left and right score; multi-choice goal programming; multi-aspiration goal programming

Online: 30 May 2019 (08:42:27 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201907.0177.v1

Optimality Conditions for Vector Equilibrium Problems on Hadamard Manifolds

Gabriel Ruiz-Garzón, Maria B. Donato, Rafaela Osuna-Gómez, Monica Milasi

Subject: Computer Science And Mathematics, Mathematics Keywords: vector equilibrium problem; generalized convexity; Hadamard manifolds; weakly efficient solutions

Online: 15 July 2019 (05:30:05 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201812.0310.v1

Regularized Integral Representations of the Reciprocal Gamma Function

Dimiter Prodanov

Subject: Computer Science And Mathematics, Mathematics Keywords: gamma function; reciprocal gamma function; integral equation

Online: 25 December 2018 (14:12:56 CET)

Show abstract| Download PDF| Share

Working Paper ARTICLE

Study of Transmission Dynamics of Novel COVID-19 by Using Mathematical Model

Thabet Abdeljawad

Subject: Computer Science And Mathematics, Mathematics Keywords: Mathematical model; Novel coronavirus -19; Nonstandard finite difference scheme; Emigration rate. 1. Introduction

Online: 9 May 2020 (11:25:34 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201807.0575.v1

Solutions to Benjamin-Bona-Mahony Equation in Two Space Dimensions by Various Methods

Alper Korkmaz

Subject: Computer Science And Mathematics, Mathematics Keywords: 2D RLW equation; 2D BBM equation; ansatz; series expansion method based on Sine-Gordon equation; traveling wave solution

Online: 30 July 2018 (10:00:20 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202006.0034.v1

$L_p$ Loss Functions in Invariance Alignment and Haberman Linking

Alexander Robitzsch

Subject: Computer Science And Mathematics, Mathematics Keywords: factor model; 2PL model; linking; invariance alignment; Haberman linking; partial invariance; item response model; structural equation model; differential item functioning

Online: 4 June 2020 (13:25:49 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202006.0054.v1

Modeling Hot Water Bath Treatment of Fruit Using Lateral Method of Lines in SCILAB

Agah Drajat Garnadi, Prasetyaning Diah R. Lestari

Subject: Computer Science And Mathematics, Mathematics Keywords: Hot Water Bath Immersion; Simulation model; Lateral method of lines; SCILAB

Online: 5 June 2020 (14:31:20 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201809.0099.v1

Global, Non-Parametric, Non-Iterative Optimization of Time-Averaged Quantities under Small, Time-Varying Forcing: An Application to a Thermal Convection Field

Hideshi Ishida, Shiho Ihara, Chiharu Okema, Shohei Yamada, Genta Kawahara

Subject: Computer Science And Mathematics, Mathematics Keywords: Global, non-parametric, non-iterative optimization; Time-mean quantities; Small time-varying forcing; Ordinary differential equation system (ODEs); Eigenvalue problem

Online: 5 September 2018 (13:13:59 CEST)

Show abstract| Download PDF| Share

Preprint ESSAY | doi:10.20944/preprints201910.0312.v1

Rethinking Discretization to Advance Limnology in a Rapidly Changing World

Benjamin Kraemer

Subject: Computer Science And Mathematics, Mathematics Keywords: classification; management; big data; computing; statistics; trophic state; zonation

Online: 27 October 2019 (15:56:58 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201907.0129.v1

On the Investigation of Temperature Effects on Oil Relative Permeability: Robust Modeling and Data Assessments

Shahab Shamshirband, Alireza Baghban, Jafar Sasanipour, Masoud Hadipoor

Subject: Computer Science And Mathematics, Mathematics Keywords: relative permeability; multilayer perceptron artificial neural network; ANFIS; LSSVM; heavy oil

Online: 9 July 2019 (04:53:33 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202009.0367.v1

A Lattice Model for COVID-19 Epidemic

George Gavalas

Subject: Computer Science And Mathematics, Mathematics Keywords: lattice model; computer simulation; COVID-19

Online: 17 September 2020 (03:04:02 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints201809.0321.v1

Mathematical Modelling of RLC Circuit Through Mixed Quadrature Rule

Saumya jena, Damayanti Nayak

Subject: Computer Science And Mathematics, Mathematics Keywords: Kirchhoff’s voltage law, Volterra integral equation, Mixed quadrature, Initial value problem, Error bound, Maclaurin's theorem

Online: 17 September 2018 (15:13:41 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202306.0848.v1

Integrating AI and NLP with Project-Based Learning in STREAM Education

Mohammad Abu-Ghuwaleh, Rasheed Saffaf

Subject: Computer Science And Mathematics, Mathematics Keywords: Artificial Intelligence; STREAM; ChatGPT; Project-Based Learning; Pedagogy

Online: 12 June 2023 (14:28:14 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202006.0194.v1

Combinatorial Optimization for Multi-Target Tracking

Mohib Ullah, Maqsood Mahmud, Habib Ullah, Kashif Ahmad, Ali Shariq Imran, Faouzi Alaya Cheikh

Subject: Computer Science And Mathematics, Mathematics Keywords: network flow; combinatorial optimization; tracking-by-detection; video surveillance

Online: 15 June 2020 (11:26:25 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201904.0336.v1

Symmetry and Shannon Measure of Ordering: Paradoxes of Voronoi Tessellation

Edward Bormashenko, Irina Legchenkova, Mark Frenkel

Subject: Computer Science And Mathematics, Mathematics Keywords: Voronoi entropy; Voronoi tessellation; symmetry; ordering; Shannon measure of information

Online: 30 April 2019 (11:51:44 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202112.0209.v1

The Multi-Attributive Border Approximation Area Comparison (Mabac) Method for Decision Making under Interval-Valued Fermatean Fuzzy Environment for Green Supplier Selection

Manoj Mathew, Ripon K. Chakrabortty, Michael J. Ryan, Muhammad Fazal Ljaz, Syed Abdul Rehman Khan

Subject: Computer Science And Mathematics, Mathematics Keywords: Interval-valued Fermatean fuzzy; MABAC; Green supplier selection; MCDM; Hamming distance

Online: 13 December 2021 (13:51:29 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201810.0433.v1

Operating on Tensors within Dynamic Coordinate Frames

Keith C. Afas

Subject: Computer Science And Mathematics, Mathematics Keywords: dynamic; tensor; operator; moving coordinates; 4D space; invariant

Online: 19 October 2018 (05:11:35 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201902.0273.v1

On The Model Of Hyperrational Numbers With Selective Ultralter

Armen Grigoryants

Subject: Computer Science And Mathematics, Mathematics Keywords: Hyperrational number, selective ultrafilter, non-standard analysis, ultrapower

Online: 28 February 2019 (12:57:15 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202007.0310.v1

Second-Order Optimality Conditions: An extension to Hadamard Manifolds

Gabriel Ruiz-Garzón, Jaime Ruiz-Zapatero, Rafaela Osuna-Gómez, Antonio Rufián-Lizana

Subject: Computer Science And Mathematics, Mathematics Keywords: Hadamard manifolds; Second-order Optimality conditions

Online: 14 July 2020 (13:24:42 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202103.0515.v1

Modeling Pulsed High-Power Spikes to Drive Piezoelectric Broadband Transducers Improving SNR in Ultrasonic Imaging & NDE

Antonio Ramos, Abelardo Ruiz, Enrique Riera

Subject: Computer Science And Mathematics, Mathematics Keywords: efficient ultrasonic transceivers, broadband piezoelectric transducers, industrial NDE, medical imaging, pulsed high-power spikes, HV capacitive-discharge pulsers, high-current driving, high dynamic range.

Online: 22 March 2021 (11:16:39 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202205.0138.v1

Shifted Chebyshev Spectral Method for Two-Dimensional Space-Time Fractional Partial Differential Equations

Shina Oloniiju, Nolwazi Nkomo, Sicelo Goqo, Precious Sibanda

Subject: Computer Science And Mathematics, Mathematics Keywords: Shifted Chebyshev polynomials; Chebyshev-Gauss-Lobatto quadrature; space-time FPDE

Online: 10 May 2022 (10:19:34 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202007.0150.v1

A Novel Optimization Algorithm to Create Perennial Calendar System based on Gregorian and International Fixed Calendards

Claude El-Bayeh

Subject: Computer Science And Mathematics, Mathematics Keywords: Gregorian Calendar; weekly-based calendar; original calendar

Online: 8 July 2020 (11:25:27 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202003.0281.v1

On Approximation Methods in Some Geodesic Spaces without the Nice Projection Property

Pongsakorn Yotkaew

Subject: Computer Science And Mathematics, Mathematics Keywords: Browder's type iteration; CAT(1) space; fixed point; Halpern's type iteration; Moudafi's viscosity type method; nonexpansive mapping

Online: 17 March 2020 (16:15:34 CET)

Show abstract| Download PDF| Share

Computer Science and Mathematics