Eric Sommers

collaborators

2 papers

math.RT2026

Lusztig's special pieces conjecture

Daniel Juteau, Paul Levy, Eric Sommers +1

Let $O$ be a special nilpotent orbit in the Lie algebra $g$ of a simple algebraic group $G$ . We give two proofs of the result that every special piece ${\mathcal…

math.AG2026

Automorphisms and deformations of regular semisimple Hessenberg varieties

Patrick Brosnan, Laura Escobar, Jaehyun Hong +4

We show that regular semisimple Hessenberg varieties can have moduli. To be precise, suppose $X$ is a regular semisimple Hessenberg variety of codimension $1$ in the flag variety $…