Question: Did both Sergei Sobolev and Vladimir Berkovich work in the field of mathematics ?
Sentence (from "Ivan Vinogradov"): From 1934 he was a Director of the Steklov Institute of Mathematics, a position he held for the rest of his life, except for the five-year period (1941–1946) when the institute was directed by Academician Sergei Sobolev.
Relevant evidence: No