A note on minimal art galleries. - Eryk Lipka (CoRR, 2019)

Detecting a single fault in a deterministic finite automaton. - Artur Polanski; Eryk Lipka (CoRR, 2021)

A Fibonacci type sequence with Prouhet-Thue-Morse coefficients. - Eryk Lipka; Maciej Ulas (CoRR, 2021)