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math.AG2026
On computing the spherical roots for a class of spherical subgroups
Roman Avdeev
Given a connected reductive algebraic group , we consider the class of spherical subgroups such that is regularly embedded in a parabolic subgroup $P \subset G…
math.AG2014★ 9 cited
Spherical actions on flag varieties
Roman Avdeev, Alexey Petukhov
For every finite-dimensional vector space V and every V-flag variety X we list all connected reductive subgroups in GL(V) acting spherically on X.