2 papers
math.GR2025
Epimorphic subgroups of simple algebraic groups
Donna M. Testerman, Adam R. Thomas
A morphism of linear algebraic groups is called an epimorphism if it admits right cancellation. A subgroup is epimorphic if the inclusion map is an ep…
math.RT2024
Multiplicity-free representations of the principal A1-subgroup in a simple algebraic group
Aluna Rizzoli, Donna Testerman
Let G be a simple algebraic group defined over an algebraically closed field k of characteristic p>0. Here we classify all irreducible kG-modules for which the principal A1 has no…