Domokos Szász

Title: András Krámli (1943-2019)

Abstract:  András Krámli’s teacher of functional analysis was Béla Szőkefalvy Nagy (B. Sz.-Nagy) in Szeged University after which he was a graduate student of Ya. G. Sinai in Moscow. I learnt a lot from him in both topics during our altogether 16 common works. I will talk about our joint activity and main coauthored works in the theory of hyperbolic billiards later also common with N. Simányi.