1 “... century, with Hans Hahn, mathematician, and Otto Neurath, sociologist and economist, and deeply influenced...”

2 “..., where he lived with his first wife Janina, a mathematician. It was during this Chicago period...”

3 “..., comparable to the influence among contemporary mathematicians and philosophers of Hermann Weyl's annotated...”

4 “... and Cambridge, for nearly five decades among mathematicians, physicists, philosophical and political thinkers...”

5 “... framework of interdisciplinary and international concerns. Natural scientists, mathematicians, social...”