English

Langlands parameters associated to special maximal parahoric spherical representations

Representation Theory 2013-10-29 v2 Number Theory

Abstract

We describe the image, under the local Langlands correspondence for tori, of the characters of a torus which are trivial on its Iwahori subgroup. Let kk be a non-archimedian local field. Let G\boldsymbol{G} be a connected reductive group defined over kk, which is quasi-split and split over a tamely ramified extension. Let KK be a special maximal parahoric subgroup of G(k)\boldsymbol{G}(k). To the class of representations of G(k)\boldsymbol{G}(k), having a non-zero vector fixed under KK, we establish a bijection, in a natural way, with the twisted semi-simple conjugacy classes of the inertia fixed subgroup of the dual group G^\hat{\boldsymbol{G}}. These results generalize the well known classical results to the ramified case.

Keywords

Cite

@article{arxiv.1212.0273,
  title  = {Langlands parameters associated to special maximal parahoric spherical representations},
  author = {Manish Mishra},
  journal= {arXiv preprint arXiv:1212.0273},
  year   = {2013}
}

Comments

9 pages. Accepted for publication in the Proceedings of the American Mathematical Society. Section 5 added to provide references to the facts used in Proposition 11. Theorem-2 stated in a more natural way. Typos fixed

R2 v1 2026-06-21T22:47:36.668Z