Isidor Pavlovich Natanson

Isidor Pavlovich Natanson ( Russian Исидор Павлович Натансон , born February 8, 1906 in Zurich , † July 3, 1964 in Leningrad ) was a Soviet mathematician who dealt with analysis (real analysis, approximation theory).

Life

Natanson graduated from Leningrad University in 1929 , where he studied with Gregor Michailowitsch Fichtenholz and later taught. First he published on singular integrals , but then, under the influence of Sergei Bernstein , turned to constructive function theory , in which he founded his own school in Leningrad. He published, among other things, about approximation theory , interpolation theory , Gibbs phenomenon , orthogonal polynomials , moment problem , but also complex function theory and functional analysis .

He is known for his textbooks on real analysis and constructive function theory.

His son Garald Isidorowitsch Natanson (1930-2003) was also a mathematician.

Theory of the functions of a real variable. 4th edition, Harri Deutsch, 1977 (first Akademie Verlag, Berlin 1954)
- English edition: Theory of functions of a real variable. Ungar, New York 1955
Constructive function theory. Akademie Verlag, Berlin 1955
- English edition: Constructive function theory. 3 volumes, Ungar, New York 1964/65
Summation of infinitely small quantities (introduction to integral calculus), Deutscher Verlag der Wissenschaften, Berlin 1955
Simplest maximum and minimum tasks. 3rd edition, Deutscher Verlag der Wissenschaften, Berlin 1965

B. Vulikh, M. Gavurin, S. Lozinskii: Russian Mathematical Surveys. Volume 20, 1965, p. 169 (obituary)

personal data
SURNAME	Natanson, Isidor Pavlovich
ALTERNATIVE NAMES	Натансон, Исидор Павлович (Russian)
BRIEF DESCRIPTION	Soviet mathematician
DATE OF BIRTH	February 8, 1906
PLACE OF BIRTH	Zurich
DATE OF DEATH	3rd July 1964
Place of death	Leningrad