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math.AT2005
On the degree 2 map for a sphere
F. R. Cohen, I. Johnson
The purpose of this article is to compare the two self-maps of given by the -fold looping of a degree 2 map and the H-space squaring map. The mai…
math.AT2004
Braid groups, free groups, and the loop space of the 2-sphere
F. R. Cohen, J. Wu
The purpose of this article is to describe connections between the loop space of the 2-sphere, Artin's braid groups, a choice of simplicial group whose homotopy groups are given by…