Politics and Mathematics
The main theme of this chapter is the boycott of Germany after World War I. The newly founded Conseil internationale de recherches excluded scientists from the Ax's countries and barred them from conferences, and even discouraged contacts between their subjects and German/Austrian scientists. Brouwer took the internationalist position and tried to obstruct the policies of the Conseil wherever possible. This brought him into numerous conflicts, including one with the Utrecht professor A. Denjoy.