English

Irreducible almost simple subgroups of classical algebraic groups

Group Theory 2013-09-24 v1 Representation Theory

Abstract

Let G be a simple classical algebraic group over an algebraically closed field K of characteristic p0p \ge 0 with natural module W. Let H be a closed subgroup of G and let V be a nontrivial p-restricted irreducible tensor indecomposable rational KG-module such that the restriction of V to H is irreducible. In this paper we classify the triples (G,H,V) of this form, where VW,WV \ne W, W^{*} and H is a disconnected almost simple positive-dimensional closed subgroup of G acting irreducibly on W. Moreover, by combining this result with earlier work, we complete the classification of the irreducible triples (G,H,V) where G is a simple algebraic group over K, and H is a maximal closed subgroup of positive dimension.

Keywords

Cite

@article{arxiv.1309.5585,
  title  = {Irreducible almost simple subgroups of classical algebraic groups},
  author = {Timothy Burness and Soumaia Ghandour and Claude Marion and Donna Testerman},
  journal= {arXiv preprint arXiv:1309.5585},
  year   = {2013}
}

Comments

115 pages; to appear in Mem. Amer. Math. Soc

R2 v1 2026-06-22T01:31:43.653Z