4 papers
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…
Intersections of Schubert varieties and smooth -stable subvarieties of flag varieties
Jaehyun Hong, Eunjeong Lee, Seonjeong Park
A smooth projective variety equipped with a suitable torus action admits a cell decomposition, called the Białynicki-Birula decomposition. The singularities of the closures of thes…
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 $…
Gorenstein toric Schubert varieties in Grassmannians
Shin-young Kim, Eunjeong Lee
A partial flag variety is a smooth projective homogeneous variety admitting an action of a maximal torus . Schubert varieties are -invariant subvarieties of the partial flag…