The cohomology rings of regular semisimple Hessenberg varieties for $h = (h(1),n,\dotsc,n)$
The cohomology rings of regular semisimple Hessenberg varieties for $h = (h(1),n,\dotsc,n)$
We investigate the cohomology rings of regular semisimple Hessenberg varieties whose Hessenberg functions are of the form h = (h(1), n . . ., n) in Lie type A n-1 .The main result of this paper gives an explicit presentation of the cohomology rings in terms of generators and their …