Nikolai Nikolaevich Nekhoroshev (Russian: 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 , 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.
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| - Nikolay Nekhoroshev (en)
- Nikolay Nekhoroshev (pt)
- Нехорошев, Николай Николаевич (ru)
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| - Не́хорошев Никола́й Никола́евич (2 октября 1946, Курск — 18 октября 2008, Москва) — советский и российский математик, специалист по гамильтоновым системам, теории возмущений, классической и небесной механике, , динамическим системам, квазиклассическим приближениям, теории особенностей. Профессор Московского государственного университета им. М. В. Ломоносова (механико-математический факультет) и Миланского университета. (ru)
- Nikolai Nikolaevich Nekhoroshev (Russian: 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 , 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. (en)
- Nikolai Nikolaevich Nekhoroshev (em russo: Николай Николаевич Нехорошев; 2 de outubro de 1946 – 18 de outubro de 2008) foi um matemático soviético-russo, especialista em mecânica clássica e sistemas dinâmicos. Suas pesquisas envolveram mecânica hamiltoniana, teoria das perturbações, mecânica celeste, sistemas integráveis, aproximação quasi-clássica e teoria das singularidades. Ele provou, em particular, um resultado de estabilidade na teoria KAM estabelecendo que, sob certas condições, as soluções de sistemas aproximadamente integráveis estão próximas a toros invariantes para tempos exponencialmente longos. (pt)
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| - Nikolai Nikolaevich Nekhoroshev (Russian: 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 , 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. Nekhoroshev was professor of the Moscow State University and University of Milan. He was an alumnus of Moscow's boarding school no. 18 (1964). (en)
- Nikolai Nikolaevich Nekhoroshev (em russo: Николай Николаевич Нехорошев; 2 de outubro de 1946 – 18 de outubro de 2008) foi um matemático soviético-russo, especialista em mecânica clássica e sistemas dinâmicos. Suas pesquisas envolveram mecânica hamiltoniana, teoria das perturbações, mecânica celeste, sistemas integráveis, aproximação quasi-clássica e teoria das singularidades. Ele provou, em particular, um resultado de estabilidade na teoria KAM estabelecendo que, sob certas condições, as soluções de sistemas aproximadamente integráveis estão próximas a toros invariantes para tempos exponencialmente longos. Nekhoroshev foi professor da Universidade Estatal de Moscou e da Universidade de Milão. Foi palestrante convidado do Congresso Internacional de Matemáticos em Vancouver (1974). (pt)
- Не́хорошев Никола́й Никола́евич (2 октября 1946, Курск — 18 октября 2008, Москва) — советский и российский математик, специалист по гамильтоновым системам, теории возмущений, классической и небесной механике, , динамическим системам, квазиклассическим приближениям, теории особенностей. Профессор Московского государственного университета им. М. В. Ломоносова (механико-математический факультет) и Миланского университета. (ru)
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