English

The Hochschild-Serre property for some p-adic analytic group actions

Number Theory 2015-06-12 v2 Group Theory

Abstract

Let HGH \subseteq G be an inclusion of pp-adic Lie groups. When HH is normal or even subnormal in GG, the Hochschild-Serre spectral sequence implies that any continuous GG-module whose HH-cohomology vanishes in all degrees also has vanishing GG-cohomology. With an eye towards applications in pp-adic Hodge theory, we extend this to some cases where HH is not subnormal, assuming that the GG-action is analytic in the sense of Lazard.

Keywords

Cite

@article{arxiv.1506.02149,
  title  = {The Hochschild-Serre property for some p-adic analytic group actions},
  author = {Kiran S. Kedlaya},
  journal= {arXiv preprint arXiv:1506.02149},
  year   = {2015}
}

Comments

9 pages; v2: simpler counterexample added, other minor corrections

R2 v1 2026-06-22T09:48:28.524Z