English

From pro-$p$ Iwahori-Hecke modules to $(\varphi,\Gamma)$-modules, II

Number Theory 2018-03-08 v1

Abstract

Let o{\mathfrak o} be the ring of integers in a finite extension field of Qp{\mathbb Q}_p, let kk be its residue field. Let GG be a split reductive group over Qp{\mathbb Q}_p, let H(G,I0){\mathcal H}(G,I_0) be its pro-pp-Iwahori Hecke o{\mathfrak o}-algebra. In \cite{dfun} we introduced a general principle how to assign to a certain additionally chosen datum (C(),ϕ,τ)(C^{(\bullet)},\phi,\tau) an exact functor MD(ΘVM)M\mapsto{\bf D}(\Theta_*{\mathcal V}_M) from finite length H(G,I0){\mathcal H}(G,I_0)-modules to (φr,Γ)(\varphi^r,\Gamma)-modules. In the present paper we concretely work out such data (C(),ϕ,τ)(C^{(\bullet)},\phi,\tau) for the classical matrix groups. We show that the corresponding functor identifies the set of (standard) supersingular H(G,I0)ok{\mathcal H}(G,I_0)\otimes_{{\mathfrak o}}k-modules with the set of (φr,Γ)(\varphi^r,\Gamma)-modules satisfying a certain symmetry condition.

Keywords

Cite

@article{arxiv.1701.00655,
  title  = {From pro-$p$ Iwahori-Hecke modules to $(\varphi,\Gamma)$-modules, II},
  author = {Elmar Grosse-Klönne},
  journal= {arXiv preprint arXiv:1701.00655},
  year   = {2018}
}

Comments

International Mathematics Research Notices

R2 v1 2026-06-22T17:39:54.088Z