English

Deformation rings and parabolic induction

Representation Theory 2019-01-08 v2 Number Theory

Abstract

We study deformations of smooth mod pp representations (and their duals) of a pp-adic reductive group GG. Under some mild genericity condition, we prove that parabolic induction with respect to a parabolic subgroup P=LNP=LN defines an isomorphism between the universal deformation rings of a supersingular representation σˉ\bar{\sigma} of LL and of its parabolic induction πˉ\bar{\pi}. As a consequence, we show that every Banach lift of πˉ\bar{\pi} is induced from a unique Banach lift of σˉ\bar{\sigma}.

Keywords

Cite

@article{arxiv.1607.02602,
  title  = {Deformation rings and parabolic induction},
  author = {Julien Hauseux and Tobias Schmidt and Claus Sorensen},
  journal= {arXiv preprint arXiv:1607.02602},
  year   = {2019}
}

Comments

28 pages, minor changes, final version

R2 v1 2026-06-22T14:49:55.937Z