3 papers
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 is a regular semisimple Hessenberg variety of codimension in the flag variety $…
math.AG2025
Bott manifolds of Bott--Samelson type and assemblies of ordered partitions
Junho Jeong, Jang Soo Kim, Eunjeong Lee
A Bott manifold is a smooth projective toric variety having an iterated -bundle structure. A certain family of Bott manifolds is used to understand the structure of…
math.AG2025
Intersections of Schubert varieties and smooth -stable subvarieties of flag varieties
Jaehyun Hong, Eunjeong Lee, Seonjeong Park
A smooth projective variety with an action of a torus admits a cell decomposition, called the Bialynicki-Birula decomposition. Singularities of the closures of these cells are not…