Abstract:Mehta and van der Kallen put a Frobenius splitting on the type A cotangent bundle T * GL n /B, thereby defining a stratification by compatibly split subvarieties, and they determined a few of the elements of this stratification. We embed T * GL n /B as a stratum in a larger stratified (and Frobenius split) space GL n /B × Mat n whose stratification we determine, thereby giving a full description of the one of Mehta-van der Kallen. The main technique is to endow GL n /B × Mat n with a Bruhat atlas, covering it … Show more
Set email alert for when this publication receives citations?
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.