As of 2004, Sergei is the Head of the Department of geometry and topology at the Steklov Mathematical Institute, he also teaches at the University of Maryland, College Park and is a Principal Researcher of the Landau Institute for Theoretical Physics in Moscow.
He also teaches at the University of Maryland, College Park. He also is a Principal Researcher of the Landau Institute for Theoretical Physics in Moscow. Sergei is the Head of the Department of geometry and topology at the Steklov Mathematical Institute. This is of 2004.