On tangent cones to Schubert varieties in type $D_n$

Mkhail V. Ignatyev, Aleksandr A. Shevchenko

Let $G$ be a complex reductive algebraic group, $T$ a maximal torus in $G$, $B$ a Borel subgroup of $G$ containing $T$, $W$ the Weyl group of $G$ with respect to $T$. Let $w$ be an…