There he was influenced by an impressive collection of teachers including Schmidt, Robert Remak and Schur, together with his assistant Alfred Brauer, and near contemporaries of Neumann such as Hurt Hirsch, Richard Rado and Helmut Wielandt .
Doon siya ay naiimpluwensyahan ng isang kahanga-koleksyon ng mga guro kasama ang Schmidt, Robert Remak at Schur, kasama ang kanyang assistant Alfred Brauer, at malapit contemporaries ng Neumann tulad ng nasaktan Hirsch, Richard Rado at Helmut Wielandt.