A new formulation of the equivariant slice filtration with applications to 𝐶_{𝑝}-slices

Hill, Michael; Yarnall, Carolyn

doi:10.1090/proc/13906

A new formulation of the equivariant slice filtration with applications to $C_p$-slices
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by Michael A. Hill and Carolyn Yarnall PDF

Proc. Amer. Math. Soc. 146 (2018), 3605-3614 Request permission

Abstract:

This paper provides a new way to understand the equivariant slice filtration. We give a new, readily checked condition for determining when a $G$-spectrum is slice $n$-connective. In particular, we show that a $G$-spectrum is slice greater than or equal to $n$ if and only if for all subgroups $H$, the $H$-geometric fixed points are $(n/|H|-1)$-connected. We use this to determine when smashing with a virtual representation sphere $S^V$ induces an equivalence between various slice categories. Using this, we give an explicit formula for the slices for an arbitrary $C_p$-spectrum and show how a very small number of functors determine all of the slices for $C_{p^n}$-spectra.

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