This paper is dedicated to the memory of N. N. Bogolyubov in recognition of his towering stature in nonlinear mechanics and theoretical physics, his remarkable many-sided genius, and the originality and depth of his contribution to the world’s science. The paper briefly describes Bogolyubov’s achievements in nonlinear mechanics, classical statistical physics, theory of superconductivity, quantum field theory, and strong interaction theory

LyudmilaMikhailovna Millionshchikova (Mukhina), is the author of several books of poetry.As early as in secondary school, Vladimir Millionshchikov became interested in mathematics and studied it on his own by reading popular books; three times he won second prizes at Moscow Mathematical Olympiads.After graduating from secondary school with excellence in 1956, Millionshchikov entered the Faculty of Mechanics and Mathematics of Moscow State University at the same year, graduated from it with excellence in 1961, and began postgraduate studies under V.V. Nemytskii.During his student years, Millionshchikov began to participate in the scientific seminar held by Nemytskii, who suggested him two topics for investigation, differential equations in locally convex spaces and topological dynamics.In Millionshchikov's papers published on the first topic during his student years, he generalized a number of theorems of the theory of ordinary differential equations to the case of linear topological or locally convex spaces.In the second topic, he was the author of one of first publications on so-called nonautonomous topological dynamics.In less than two years, developing the approach used in that paper, Millionshchikov devised a method of metric (probabilistic) investigation of linear nonautonomous differential systems and constructed their metric theory.

1 S.P. Timoshenko Institute of Mechanics, National Academy of Sciences of Ukraine, Nesterov Str., 3, 03057, Kiev-57, Ukraine 2 V.A. Steklov Institute of Mathematics Russian Academy of Sciences, Vavilova Str., 42, Moscow, Russia 3 Institute of Mathematics, National Academy of Sciences of Ukraine, Tereshchenkivska Str., 3, 01601, Kiev-4, Ukraine 4 Joint Institute of Nuclear Research, Joliot–Curie Str., 6, Dubna, Moscow reg., Russia