Sergei Sobolev, Date of Birth, Place of Birth, Date of Death

Sergei Sobolev

Russian mathematician

Date of Birth: 23-Sep-1908

Place of Birth: Saint Petersburg

Date of Death: 03-Jan-1989

Profession: mathematician, university teacher

Zodiac Sign: Libra

Prof Sergei Lvovich Sobolev (Russian: ?????´? ????´??? ??´?????) HFRSE (6 October 1908 – 3 January 1989) was a Soviet mathematician working in mathematical analysis and partial differential equations. Sobolev introduced notions that are now fundamental for several areas of mathematics.
Sobolev spaces can be defined by some growth conditions on the Fourier transform.
They and their embedding theorems are an important subject in functional analysis.
Generalized functions (later known as distributions) were first introduced by Sobolev in 1935 for weak solutions, and further developed by Laurent Schwartz.
Sobolev abstracted the classical notion of differentiation, so expanding the range of application of the technique of Newton and Leibniz.
The theory of distributions is considered now as the calculus of the modern epoch.