Zbigniew Ciesielski
1934–2020 (age 86)
Biography
Zbigniew Ciesielski (Polish pronunciation: [ˈzbiɡɲɛf t͡ɕɛˈɕɛlskʲi]; 1 October 1934 – 5 October 2020) was a Polish mathematician specializing in functional analysis and probability theory. He served as the President of the Polish Mathematical Society from 1981 to 1983.