We show that the quotient space of the p-subgroup complex of a finite group by the action of the group is contractible. This was conjectured by Webb.
Cite this article
P. Symonds, The orbit space of the p-subgroup complex is contractible. Comment. Math. Helv. 73 (1998), no. 3, pp. 400–405DOI 10.1007/S000140050061