Question: Are both Sergei Sobolev and Mikhail Leonidovich Gromov members of the IHÉS in France?
Sentence (from "Mikhail Leonidovich Gromov"): Mikhail Leonidovich Gromov (also Mikhael Gromov, Michael Gromov or Mischa Gromov; Russian: Михаи́л Леони́дович Гро́мов ; born 23 December 1943), is a French-Russian mathematician known for work in geometry, analysis and group theory.
Relevant evidence: Yes