Yuri Kondratiev

Yuri Kondratiev was a Ukrainian mathematician and a professor at the Bielefeld University in Germany.
Kondratiev died on 5 September 2023, at the age of 69.

His research interests included functional analysis, mathematical physics and stochastic calculus.
Kondratiev was a member of the Kyiv school of functional analysis founded by M. Krein and led, for many years, by Y. Berezansky.
His interests in mathematical physics were inspired by cooperation with the Moscow seminar in statistical Physics. Yuri's collaboration with A. Skorokhod has influenced most of his subsequent papers on stochastics.

Biography

In 1975, Yuri Kondratiev graduated with honours from Kyiv University.
In 1979, Kondratiev completed his Candidate of Sciences with thesis entitled “Generalized functions in problems of infinite dimensional analysis” at the Kyiv University.
In 1987, Kondratiev obtained the Degree of Doctor of Sciences in the area "Spectral Analysis of Infinite Dimensional Elliptic Differential Operators”.
From 1991 Kondratiev worked in Ukraine as well as in Germany and the UK. From 2008 he held a full Professor position at the Bielefeld University.

Kondratiev wrote a book entitled "Spectral Methods in Infinite Dimensional Analysis", .
Kondratiev co-authored a monograph .
Together with S. Albeverio and Yuri initiated a systematical study of Continuous Configuration Spaces. One space of stochastic distributions is named after him.