Tyszka, Apoloniusz (2023) The predicate of the current mathematical knowledge substantially increases the constructive mathematics what is impossible for any empirical science. [Preprint]

Kozdęba, Agnieszka and Tyszka, Apoloniusz (2022) Statements and open problems on decidable sets X⊆N that contain informal notions and refer to the current knowledge on X. [Preprint]

Kurpaska, Sławomir and Tyszka, Apoloniusz (2020) The physical limits of computation inspire an open problem that concerns abstract computable sets X⊆N and cannot be formalized in the set theory ZFC as it refers to our current knowledge on X. [Preprint]

Kurpaska, Sławomir and Tyszka, Apoloniusz (2020) The physical impossibility of machine computations on sufficiently large integers inspires an open problem that concerns abstract computable sets X⊆N and cannot be formalized in the set theory ZFC as it refers to our current knowledge on X. [Preprint]

Kurpaska, Sławomir and Tyszka, Apoloniusz (2019) Semi-formally stated open problems on computable sets X={n \in N: \phi(n)}, where \phi(n) has the same intuitive meaning for every n \in N and the finiteness (infiniteness) of X remains conjectured. [Preprint]