English

Topological generation of special linear groups

Group Theory 2020-11-03 v2

Abstract

Let C1,,CeC_1,\ldots,C_e be noncentral conjugacy classes of the algebraic group G=SLn(k)G=SL_n(k) defined over a sufficiently large field kk, and let Ω:=C1××Ce\Omega:=C_1\times \ldots \times C_e. This paper determines necessary and sufficient conditions for the existence of a tuple (x1,,xe)Ω(x_1,\ldots,x_e)\in\Omega such that x1,,xe\langle x_1,\ldots,x_e\rangle is Zariski dense in GG. As a consequence, a new result concerning generic stabilizers in linear representations of algebraic groups is proved, and existing results on random (r,s)(r,s)-generation of finite groups of Lie type are strengthened.

Keywords

Cite

@article{arxiv.1801.10065,
  title  = {Topological generation of special linear groups},
  author = {Spencer Gerhardt},
  journal= {arXiv preprint arXiv:1801.10065},
  year   = {2020}
}

Comments

33 pages; to appear in Journal of Algebra

R2 v1 2026-06-23T00:03:58.206Z