Orbits on a product of two flags and a line and the Bruhat order, II

Mark Colarusso, Sam Evens

Let $G=GL(n)$ be the $n\times n$ complex general linear group and let $\B_{n}$ be its flag variety. A Borel subgroup $B$ of $G$ acts on $\B_{n}\times \mathbb{P}^{n-1}$ diagonally w…