English

A comparison of L-groups for covers of split reductive groups

Number Theory 2016-01-08 v1 Representation Theory

Abstract

In one article, the author has defined an L-group associated to a cover of a quasisplit reductive group over a local or global field. In another article, Wee Teck Gan and Fan Gao define (following an unpublished letter of the author) an L-group associated to a cover of a pinned split reductive group over a local or global field. In this short note, we give an isomorphism between these L-groups. In this way, the results and conjectures discussed by Gan and Gao are compatible with those of the author. Both support the same Langlands-type conjectures for covering groups.

Keywords

Cite

@article{arxiv.1601.01366,
  title  = {A comparison of L-groups for covers of split reductive groups},
  author = {Martin H. Weissman},
  journal= {arXiv preprint arXiv:1601.01366},
  year   = {2016}
}

Comments

9 pages

R2 v1 2026-06-22T12:24:23.632Z