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 ${\Omega }^k{S}^{2n+1}$ given by ${\Omega }^k[2]$ the $k$-fold looping of a degree 2 map and ${\Psi }^k(2)$ the H-space squaring map. The mai…