A comparison of norm maps
arXiv:1201.6277 · doi:10.1090/S0002-9939-2014-11845-4
Abstract
We present a spectrum-level version of the norm map in equivariant homotopy theory based on the algebraic construction in work of Greenleess-May. We show that this new norm map is same as the construction in work Hill-Hopkins-Ravenel on the Kervaire invariant problem. Our comparison of the two norm maps gives a conceptual understanding of the choices inherent in the definition of the multiplicative norm map.
11 pages; with appendix by Anna Marie Bohmann and Emily Riehl