Sergey Nikolsky

Sergey Mikhailovich Nikolsky (; 30 April 1905 – 9 November 2012) was a Soviet and Russian mathematician.

Biography Nikolsky was born in Talitsa, which was at that time located in Kamyshlovsky Uyezd of the Russian Empire. He had been an Academician since 28 November 1972. He also had won many scientific awards. At the age of 92 he was still actively giving lectures in Moscow Institute of Physics and Technology. In 2005, he was only giving talks at scientific conferences, but was still working in MIPT, at the age of 100. He died in Moscow in November 2012 at the age of 107.

Scientific activities Nikolsky made fundamental contributions to functional analysis, approximation of functions, quadrature formulas, enclosed functional spaces and their applications to variational solutions of partial differential equations. He created a large scientific school of functions' theory and its applications. He authored over 100 scientific publications, including 3 monographs, 2 college textbooks and 7 school textbooks.

Selected publications 1964: Quadrature Formulae, Delhi, Hindustan Publishing 1967: (editor): Theory and Applications of Differentiable Functions of Several Variables, American Mathematical Society 1975: Course in Mathematical Analysis, 2 vols., Курс математического анализа, Nauka Publishing 1975: Approximation of Functions of Several variables and Imbedding Theorems, Springer Verlag (Russian original, Nauka, Moscow 1969) 1978,9: (with Valentin Petrovich Ilyin and Oleg Besov) Integral Representation of Functions and Embedding Theorems, 2 vols., Wiley 1983: (with Differential Equations, Multiple Integrals, Series, Theory of Functions of a Complex Variable, Mir Publishers, Moscow 1986: Treatise on the Shift Operator, Springer Verlag (Russian original, Moscow 1980) 2002: Operators, Functions and Systems. An easy reading, Volume 1: Hardy, Hankel and Toeplitz, American Mathematical Society