Epimorphic subgroups of simple algebraic groups

A homomorphism of linear algebraic groups ϕ:K→G is called an epimorphism if it admits right cancellation. A subgroup H≤G is epimorphic if the inclusion map is an epimorphism. For G a simple algebraic group over an algebraically closed field of arbitrary characteristic we construct epimorphic subgroups of bounded dimension (at most five).

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Publication Details

Journal
Journal of Algebra
Published
2025-11-16
DOI
https://doi.org/10.1016/j.jalgebra.2025.10.040
Primary Topic
Finite Group Theory Research
Type
article
Field-Weighted Citation Impact
0.00

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article

Epimorphic subgroups of simple algebraic groups

Adam R. Thomas, Donna Testerman
Journal of Algebra
Finite Group Theory Research
article

Epimorphic subgroups of simple algebraic groups

Adam R. Thomas, Donna Testerman
article en

Abstract

A homomorphism of linear algebraic groups ϕ:K→G is called an epimorphism if it admits right cancellation. A subgroup H≤G is epimorphic if the inclusion map is an epimorphism. For G a simple algebraic group over an algebraically closed field of arbitrary characteristic we construct epimorphic subgroups of bounded dimension (at most five).

Journal of AlgebraVol. 690
National Science Foundation, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Engineering and Physical Sciences Research Council
Openalex Percentile: Top 58%
Finite Group Theory Research
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