9 citations · 28 across the 15 of their papers we have counts for
6 papers · 1 filter
On the extended weight monoid and its applications to orthogonal polynomials
Guido Pezzini, Maarten van Pruijssen
Given a connected simply connected semisimple group G and a connected spherical subgroup K we determine the generators of the extended weight monoid of G/K, based on the homogeneou…
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…
The spherical systems of the wonderful reductive subgroups
Paolo Bravi, Guido Pezzini
We provide the spherical systems of the wonderful reductive subgroups of any reductive group.
Automorphisms of wonderful varieties
Guido Pezzini
Let G be a complex semisimple linear algebraic group, and X a wonderful G-variety. We determine the connected automorphism group of X and we calculate Luna's invariants of X under…
Simple Immersions of Wonderful Varieties
Guido Pezzini
Let G be a semisimple connected linear algebraic group over C, and X a wonderful G-variety. We study the possibility of realizing X as a closed subvariety of the projective space o…
Wonderful varieties of type D
Paolo Bravi, Guido Pezzini
Let G be a complex connected semisimple group, whose simple components have type A or D. We prove that wonderful G-varieties are classified by means of combinatorial objects called…