Yuri Kondratiev (; 23 October 1953 – 5 September 2023) was a Ukrainian mathematician and a professor at the

Bielefeld University Bielefeld University () is a public university in Bielefeld, Germany. Founded in 1969, it is one of the country's newer universities, and considers itself a "reform" university, following a different style of organization and teaching than the e ...

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 ( R. Dobrushin, R. Minlos, Y. Sinai). 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 The Taras Shevchenko National University of Kyiv (; also known as Kyiv University, Shevchenko University, or KNU) is a public university in Kyiv, Ukraine. The university is the third-oldest university in Ukraine after the University of Lviv and ...

. * In 1979, Kondratiev completed his

Candidate of Sciences A Candidate of Sciences is a Doctor of Philosophy, PhD-equivalent academic research degree in all the post-Soviet countries with the exception of Ukraine, and until the 1990s it was also awarded in Central and Eastern European countries. It is ...

with thesis entitled “Generalized functions in problems of infinite dimensional analysis” at the

. * In 1987, Kondratiev obtained the Degree of

Doctor of Sciences A Doctor of Sciences, abbreviated д-р наук or д. н.; ; ; ; is a higher doctoral degree in the Russian Empire, Soviet Union and many Commonwealth of Independent States countries. One of the prerequisites of receiving a Doctor of Sciences ...

in the area "Spectral Analysis of Infinite Dimensional Elliptic Differential Operators”. * From 1991 Kondratiev worked in Ukraine ( Institute of Mathematics of the National Academy of Sciences of Ukraine, National Pedagogical Dragomanov University) as well as in Germany (

University of Bonn The University of Bonn, officially the Rhenish Friedrich Wilhelm University of Bonn (), is a public research university in Bonn, North Rhine-Westphalia, Germany. It was founded in its present form as the () on 18 October 1818 by Frederick Willi ...

) and the UK (

University of Reading The University of Reading is a public research university in Reading, Berkshire, England. It was founded in 1892 as the University Extension College, Reading, an extension college of Christchurch College, Oxford, and became University College, ...

). From 2008 he held a full Professor position at the

Work

* Kondratiev wrote a book entitled "Spectral Methods in Infinite Dimensional Analysis
12
(1988, with Y. Berezansky, in Russian; translated into English in 1995). * Kondratiev co-authored a monograp
"The Statistical Mechanics of Quantum Lattice Systems"
(with S. Albeverio
Y. Kozitsky
an

. * Together with S. Albeverio an
M. Röckner
Yuri initiated a systematical study of Continuous Configuration Spaces. One space of stochastic distributions is named after him
«Kondratiev space»
.

Selected articles

Analysis and geometry on configuration spaces (with S. Albeverio and M. Rökner), J. Funct. Anal., 154, 444–500 (1998).

Analysis and geometry on configuration spaces: The Gibbsian case, J. Funct. Anal., 157, 242–291 (1998).

Harmonic analysis on configuration spaces I. General theory (with T. Kuna), IDAQP, 5, 201–233 (2002).

On contact processes in continuum (with A. Skorokhod), IDAQP, 9, 187–198 (2006).

Semigroup approach to non-equilibrium birth-and-death stochastic dynamics in continuum (with D. Finkelshtein and O. Kutovyi), J. Funct. Anal. 262, no. 3, 1274–1308 (2012).

References

External links

Bielefeld University

Mathematics Genealogy
1953 births 2023 deaths 20th-century Ukrainian mathematicians 21st-century Ukrainian mathematicians Laureates of the State Prize of Ukraine in Science and Technology Scientists from Kyiv Academic staff of Bielefeld University {{Ukraine-scientist-stub