A. Shevchenko

collaborators

2 papers

math.AG2020

On tangent cones to Schubert varieties in type $E$

Mikhail V. Ignatyev, Aleksandr A. Shevchenko

We consider tangent cones to Schubert subvarieties of the flag variety $G / B$ , where $B$ is a Borel subgroup of a reductive complex algebraic group $G$ of type $E_{6}$ , $E_{7}$ or $E_{8}$ …

math.RT2019

Centrally generated primitive ideals of $U (n)$ for exceptional types

Mikhail V. Ignatyev, Aleksandr A. Shevchenko

Let $g$ be a complex semisimple Lie algebra, $b$ be a Borel subalgebra of $g$ , $n$ be the nilradical of $b$ , and $U(\mathfrak…

On tangent cones to Schubert varieties in type E

Centrally generated primitive ideals of U(n) for exceptional types

On tangent cones to Schubert varieties in type $E$

Centrally generated primitive ideals of $U (n)$ for exceptional types