English

Local-global compatibility for regular algebraic cuspidal automorphic representation when $\ell \neq p$

Number Theory 2014-11-11 v1

Abstract

We prove the compatibility of local and global Langlands correspondences for GLnGL_n up to semisimplification for the Galois representations constructed by Harris-Lan-Taylor-Thorne and Scholze. More precisely, let rp(π)r_p(\pi) denote an nn-dimensional pp-adic representation of the Galois group of a CM field FF attached to a regular algebraic cuspidal automorphic representation π\pi of GLn(AF)GL_n(\mathbb{A}_F). We show that the restriction of rp(π)r_p(\pi) to the decomposition group of a place vpv\nmid p of FF corresponds up to semisimplification to rec(πv)rec(\pi_v), the image of πv\pi_v under the local Langlands correspondence. Furthermore, we can show that the monodromy of the associated Weil-Deligne representation of .rp(π)GFv.r_p(\pi)|_{G_{F_v}} is `more nilpotent' than the monodromy of rec(πv)rec(\pi_v).

Keywords

Cite

@article{arxiv.1411.2520,
  title  = {Local-global compatibility for regular algebraic cuspidal automorphic representation when $\ell \neq p$},
  author = {Ila Varma},
  journal= {arXiv preprint arXiv:1411.2520},
  year   = {2014}
}

Comments

28 pages, Comment welcome!

R2 v1 2026-06-22T06:53:48.925Z