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A stratification of the equivariant slice filtration

Lennart Meier, XiaoLin Danny Shi, Mingcong Zeng

Abstract

In this paper, we construct a stratification tower for the equivariant slice filtration. This tower stratifies the slice spectral sequence of a $G$-spectrum $X$ into distinct regions. Within each of these regions, the differentials are determined by the localized slice spectral sequences, which compute the geometric fixed points along with their associated residue group actions. Consequently, the stratification tower offers an inductive method of understanding the entirety of the equivariant slice spectral sequence of $X$ by examining each of its distinct stratification regions.

A stratification of the equivariant slice filtration

Abstract

In this paper, we construct a stratification tower for the equivariant slice filtration. This tower stratifies the slice spectral sequence of a -spectrum into distinct regions. Within each of these regions, the differentials are determined by the localized slice spectral sequences, which compute the geometric fixed points along with their associated residue group actions. Consequently, the stratification tower offers an inductive method of understanding the entirety of the equivariant slice spectral sequence of by examining each of its distinct stratification regions.
Paper Structure (7 sections, 12 theorems, 72 equations, 10 figures)

This paper contains 7 sections, 12 theorems, 72 equations, 10 figures.

Key Result

Theorem A

Let $G$ be a finite group and $X$ a $G$-spectrum. There is a decreasing filtration of the equivariant slice spectral sequence of $X$ given by the tower of localized slice spectral sequences, where $\widetilde{E}\mathcal{F}_{\leq 0} \wedge \textup{SliceSS}(X) \simeq \textup{SliceSS}(X)$ and $\widetilde{E}\mathcal{F}_{\leq |G|} \wedge \textup{SliceSS}(X) \simeq *$. This filtration has the property

Figures (10)

  • Figure 1: Hill--Hopkins--Ravenel's computation of the $C_4$-slice spectral sequence of $E_2^{hC_4}$.
  • Figure 2: Stratification regions of the slice spectral sequence.
  • Figure 3: The isomorphism region $\mathcal{R}_{\mathcal{F}, \mathcal{F}'}$ for the map $\varphi$.
  • Figure 4: Stratification regions of the slice spectral sequence when $V = 0$.
  • Figure 5: The stratification tower of the slice spectral sequence.
  • ...and 5 more figures

Theorems & Definitions (31)

  • Theorem A: Stratification
  • Theorem B: Comparison, \ref{['thm:ROGSliceIsom2']}
  • Theorem C: Slice Recovery Theorem, \ref{['thm:SliceRecovery1']}
  • Theorem D: Positive Cone, \ref{['thm:SliceSSVanishingRegion']}
  • Proposition 2.1
  • proof
  • Definition 2.2
  • Corollary 2.3
  • Remark 2.4
  • Definition 2.5
  • ...and 21 more