4 papers
Clique complexes of groups and order sheaves
Michael Bate, Brent Everitt, Sam Ford
We study the clique complex of a finite group: a simplicial complex whose faces are in one-to-one correspondence with the elements of the group, and arise via a decomposition…
Geometric rigidity of simple modules for algebraic groups
Michael Bate, David I. Stewart
Let k be a field, let G be an affine algebraic k-group and V a finite-dimensional G-module. We say V is rigid if the socle series and radical series coincide for the action of G on…
The subgroup structure of pseudo-reductive groups
Michael Bate, Ben Martin, Gerhard Röhrle +1
Let be a field. We investigate the relationship between subgroups of a pseudo-reductive -group and its maximal reductive quotient , with applications to the subgroup…
On good subgroups, Springer maps, and overgroups of distinguished unipotent elements in reductive groups
Michael Bate, Sören Böhm, Benjamin Martin +1
Suppose is a simple algebraic group defined over an algebraically closed field of good characteristic . In 2018 Korhonen showed that if is a connected reductive subgroup…