Background
He was born in Odessa, Russian Empire (today"s Ukraine) into a Jewish family and died in Moscow, Union of the Soviet Socialist Republics.
He was born in Odessa, Russian Empire (today"s Ukraine) into a Jewish family and died in Moscow, Union of the Soviet Socialist Republics.
He received his Doctor of Philosophy in 1943 from the Steklov Institute of Mathematics. His doctoral advisor was Mark Krein.
In 1962 he became professor in the Department of the Theory of Functions and Functional Analysis at the Steklov Mathematical Institute.