Benjamin Martin

collaborators

3 papers

math.GT2024

Essential tori in 3-manifolds not detected in any characteristic

Grace S. Garden, Benjamin Martin, Stephan Tillmann

Infinite families of 3-dimensional closed graph manifolds and closed Seifert fibered spaces are exhibited, each member of which contains an essential torus not detected by ideal po…

math.GR2024

The subgroup structure of pseudo-reductive groups

Michael Bate, Ben Martin, Gerhard Röhrle +1

Let $k$ be a field. We investigate the relationship between subgroups of a pseudo-reductive $k$ -group $G$ and its maximal reductive quotient $G^{'}$ , with applications to the subgroup…

math.GR2024

On good $A_{1}$ subgroups, Springer maps, and overgroups of distinguished unipotent elements in reductive groups

Michael Bate, Sören Böhm, Benjamin Martin +1

Suppose $G$ is a simple algebraic group defined over an algebraically closed field of good characteristic $p$ . In 2018 Korhonen showed that if $H$ is a connected reductive subgroup…

Essential tori in 3-manifolds not detected in any characteristic

The subgroup structure of pseudo-reductive groups

On good A1​ subgroups, Springer maps, and overgroups of distinguished unipotent elements in reductive groups

On good $A_{1}$ subgroups, Springer maps, and overgroups of distinguished unipotent elements in reductive groups