Another look at Brouwer's dissertation
pp. 3-20
in: Pascal Boldini, Michel Bourdeau, Gerhard Heinzmann (eds), One hundred years of intuitionism (1907–2007), Berlin, Springer, 2008Abstract
Brouwer's dissertation marked the beginning of two separate research activities that played an important role in the mathematics of the twentieth century. The first of these were his first steps in topology and Lie group theory, the second one opened up new directions in the foundations of mathematics. It is with the second one that we are concerned here; for the first one see Freudenthal's comments in (Brouwer 1976).
