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math.AG2014★ 9 cited
Orbits of strongly solvable spherical subgroups on the flag variety
Jacopo Gandini, Guido Pezzini
Let G be a connected reductive complex algebraic group and B a Borel subgroup of G. We consider a subgroup H of B acting with finitely many orbits on the flag variety G/B, and we c…
math.RT2014
Spherical subgroups of Kac-Moody groups and transitive actions on spherical varieties
Guido Pezzini
We define and study a class of spherical subgroups of a Kac-Moody group. In analogy with the standard theory of spherical varieties, we introduce a combinatorial object associated…