Semyon Aranovich Gershgorin
Encyclopedia
Semyon Aranovich Gershgorin (August 24, 1901 – May 30, 1933) was a Soviet (born in Pruzhany
Pruzhany
Pruzhany is a town in Brest Voblast, Belarus. Pruzhany is the center of a district in Brest Region, Belarus. Its population is about 20.000 people. The town is located at the confluence of the Mukha River and the Vets Canal, which give the start to Mukhavets River.-History:Pruzhany has been known...

, Belarus
Belarus
Belarus , officially the Republic of Belarus, is a landlocked country in Eastern Europe, bordered clockwise by Russia to the northeast, Ukraine to the south, Poland to the west, and Lithuania and Latvia to the northwest. Its capital is Minsk; other major cities include Brest, Grodno , Gomel ,...

, Russian Empire
Russian Empire
The Russian Empire was a state that existed from 1721 until the Russian Revolution of 1917. It was the successor to the Tsardom of Russia and the predecessor of the Soviet Union...

) 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....

. He began as a student at the Petrograd Technological Institute in 1923, became a Professor in 1930, and was given an appointment at the Leningrad Mechanical Engineering Institute in the same year. His contributions include the Gershgorin circle theorem
Gershgorin circle theorem
In mathematics, the Gershgorin circle theorem may be used to bound the spectrum of a square matrix. It was first published by the Belarusian mathematician Semyon Aranovich Gershgorin in 1931. The spelling of S. A...

.

The spelling of S. A. Gershgorin's name (Семён Аранович Гершгорин) has been transliterated in several different ways, including Geršgorin, Gerschgorin, Gerszgorin, Gershgorin and from the Yiddish spelling הירשהאָרן to Hirshhorn and Hirschhorn.

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