English

A multiplicative Tate spectral sequence for compact Lie group actions

Algebraic Topology 2024-03-25 v3

Abstract

Given a compact Lie group GG and a commutative orthogonal ring spectrum RR such that R[G]=π(RG+)R[G]_* = \pi_*(R \wedge G_+) is finitely generated and projective over π(R)\pi_*(R), we construct a multiplicative GG-Tate spectral sequence for each RR-module XX in orthogonal GG-spectra, with E2E^2-page given by the Hopf algebra Tate cohomology of R[G]R[G]_* with coefficients in π(X)\pi_*(X). Under mild hypotheses, such as XX being bounded below and the derived page RERE^\infty vanishing, this spectral sequence converges strongly to the homotopy π(XtG)\pi_*(X^{tG}) of the GG-Tate construction XtG=[EG~F(EG+,X)]GX^{tG} = [\widetilde{EG} \wedge F(EG_+, X)]^G.

Keywords

Cite

@article{arxiv.2008.09095,
  title  = {A multiplicative Tate spectral sequence for compact Lie group actions},
  author = {Alice Hedenlund and John Rognes},
  journal= {arXiv preprint arXiv:2008.09095},
  year   = {2024}
}

Comments

134 pages

R2 v1 2026-06-23T17:59:50.846Z