Nikolay Nekhoroshev
{{Short description|Soviet and Russian mathematician}}
Nikolai Nikolaevich Nekhoroshev ({{langx|ru|Николай Николаевич Нехорошев}}; 2 October 1946 – 18 October 2008) was a prominent Soviet Russian mathematician specializing in classical mechanics and dynamical systems. His research concerned Hamiltonian mechanics, perturbation theory, celestial mechanics, integrable systems, dynamical systems, the quasiclassical approximation, and singularity theory. He proved, in particular, a stability result in KAM-theory stating that, under certain conditions, solutions of nearly integrable systems stay close to invariant tori for exponentially long times {{harv|Giorgilli|1989}}.
Nekhoroshev was professor of the Moscow State University and University of Milan. He was an alumnus of Moscow's boarding school no. 18 (1964).
Winner of the Kolmogorov Prize (1997).
References
- {{Citation | year=1977 | location=N.Y. | publisher=AMS Bookstore |
isbn= 978-0-821-83059-8 | pages=87–90 |
title=20 Lectures Delivered at the International Congress of Mathematicians in Vancouver, 1974 |
chapter=On the behavior of near integrable systems | series=AMS Translations 2 | volume=109 | editor=Anosov, D.V. | last1=Nekhoroshev | first1=N.N.}}.
- {{Citation | last1=Giorgilli | first1=Antonio | authorlink=Antonio Giorgilli | title=Integrable Systems and Applications | publisher=Springer-Verlag | location=Berlin, New York | isbn=978-3-540-51615-6 | doi=10.1007/BFb0035669 | year=1989 | chapter=Effective stability in Hamiltonian systems in the light of Nekhoroshev's theorem | series=Lecture Notes in Physics | pages=142–153 | volume=342}}.
- {{Citation | last1=Abramov | first1=A.M. | last2=Arnold
| first2=Vl.I. | title=Nikolai Nikolaevich Nekhoroshev (obituary)
| journal = Uspekhi Mat. Nauk | year=2009 |volume=64
| issue=3(387) | pages=174–178
| doi=10.1070/RM2009v064n03ABEH004622 | bibcode=2009RuMaS..64..561A | url=http://mi.mathnet.ru/umn9288 |language=Russian |display-authors=etal| url-access=subscription }}.
{{Authority control}}
{{DEFAULTSORT:Nekhoroshev, Nikolay}}
Category:Moscow State University alumni
Category:Academic staff of Moscow State University
Category:Russian mathematicians
Category:Soviet mathematicians
Category:Dynamical systems theorists
{{Russia-mathematician-stub}}