Showing math.AGShow all
3 papers · 1 filter
math.AG2023
Geometric and combinatorial properties of extended Springer fibers
William Graham, Martha Precup, Amber Russell
We consider a generalization of the Springer resolution studied in earlier work of the authors, called the extended Springer resolution. In type , this map plays a role in Luszt…
math.AG2023
-Orbit closures and Hessenberg varieties
Mahir Bilen Can, Martha Precup, John Shareshian +1
This article explores the relationship between Hessenberg varieties associated with semisimple operators with two eigenvalues and orbit closures of a spherical subgroup of the gene…
math.AG2012
Affine pavings of Hessenberg varieties for semisimple groups
Martha Precup
In this paper we consider certain closed subvarieties of the flag variety, known as Hessenberg varieties. We prove that Hessenberg varieties corresponding to nilpotent elements whi…