The cohomology rings of regular nilpotent Hessenberg varieties in Lie type A

Hiraku Abe, Megumi Harada, Tatsuya Horiguchi +1

Let $n$ be a fixed positive integer and $h:\{1,2,\dots ,n\}\to \{1,2,\dots ,n\}$ a Hessenberg function. The main results of this paper are twofold. First, we give a syste…