TY  - GENERIC
DO  - 
UR  - http://dx.doi.org/
TI  - Open Problems on Computable Sets {${\mathcal X} \subseteq N$}, Which Require That a Known Integer $n$ Satisfies ${\rm card}({\mathcal X})=\omega \Leftrightarrow {\mathcal X} \cap (n,\infty) \neq \emptyset$, and Which Cannot Be Stated Formally as They Refer to Current Knowledge about ${\mathcal X}$}
T2  - Preprints
AU  - Tyszka, Apoloniusz
PY  - 2020
DA  - 2020/02/25
PB  - Preprints