Štefan Porubský (Academy of Sciences of the Czech Republic): Properties of sum-of-digits functions - Online, Webex webinar - - -
CCOR Workshop: Interior Point Algorithm and Quantum Computing - Budapesti Corvinus Egyetem, C.714 - - -
Hamid Ben Yakkou (Sidi Mohammed Ben Abdellah University): Recent results in the study of monogenity and indices in number fields - Online, Webex webinar - - -
Eszter Szabó-Gyimesi (University of Debrecen): Associated $r$-Dowling numbers and some relatives - Institute of Mathematics (Debrecen), Room M402 - - -