Yurii Alekseevich Mitropolskiy (3 January 1917 — 14 June 2008) was a renowned Soviet, Ukrainian

Ukraine

Ukraine is a country in Eastern Europe. It has an area of 603,628 km², making it the second largest contiguous country on the European continent, after Russia...

 mathematician

Mathematician

A mathematician is a person whose primary area of study is the field of mathematics. Mathematicians are concerned with quantity, structure, space, and change....

 known for his contributions to the fields of dynamical systems and nonlinear oscillations

Nonlinearity

In mathematics, a nonlinear system is one that does not satisfy the superposition principle, or one whose output is not directly proportional to its input; a linear system fulfills these conditions. In other words, a nonlinear system is any problem where the variable to be solved for cannot be...

. He received his Ph.D. from Kiev State University, under the supervision of theoretical physicist and mathematician Nikolay Bogolyubov

Nikolay Bogolyubov

Nikolay Nikolaevich Bogolyubov was a Russian and Ukrainian Soviet mathematician and theoretical physicist known for a significant contribution to quantum field theory, classical and quantum statistical mechanics, and to the theory of dynamical systems; a recipient of the Dirac Prize...

. Mitropolskiy is one of the most frequently joint-published mathematicians known, with at least 240 collaborators, but his Erdős number

Erdos number

The Erdős number describes the "collaborative distance" between a person and mathematician Paul Erdős, as measured by authorship of mathematical papers.The same principle has been proposed for other eminent persons in other fields.- Overview :...

 is 3.

Selected works

• N. N. Bogoliubov
  Nikolay Bogolyubov
  Nikolay Nikolaevich Bogolyubov was a Russian and Ukrainian Soviet mathematician and theoretical physicist known for a significant contribution to quantum field theory, classical and quantum statistical mechanics, and to the theory of dynamical systems; a recipient of the Dirac Prize...
  
   and Y. A. Mitropolski. Asymptotic methods in the theory of non-linear oscillations. New York: Gordon and Breach, 1961 (translated from Russian).
• N. N. Bogoljubov
  Nikolay Bogolyubov
  Nikolay Nikolaevich Bogolyubov was a Russian and Ukrainian Soviet mathematician and theoretical physicist known for a significant contribution to quantum field theory, classical and quantum statistical mechanics, and to the theory of dynamical systems; a recipient of the Dirac Prize...
  
  , Ju. A. Mitropoliskii, and A. M. Samoilenko. Methods of accelerated convergence in nonlinear mechanics. New York: Springer-Verlag, 1976 (translated from Russian).
• Yu. A. Mitropolaky and A. K. Lopatin. Nonlinear mechanics, groups and symmetry. Dordrecht; Boston: Kluwer Academic Publishers, 1995. ISBN 079233339X.
• Yu. A. Mitropolʹskii. Problems of the asymptotic theory of nonstationary vibrations. Jerusalem: Israel Program for Scientific Translations, 1965.
• Yu. A. Mitropolsky, A. M. Samoilenko, and D. I. Martinyuk. Systems of evolution equations with periodic and quasiperiodic coefficients. Dordrecht; Boston: Kluwer Academic, 1993. ISBN 0792320549.
• Integrable dynamical systems (coauthor).