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Wonderful varieties of type D

Paolo Bravi·Guido Pezzini
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Abstract

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 spherical systems. This is a generalization of a known result of Luna for groups of type A; thanks to another result of Luna, this implies also the classification of all spherical G-varieties for the groups G we are considering. For these G we also prove the smoothness of the embedding of Demazure.

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Paolo Bravi, Guido Pezzini. 2004-10-21. Wonderful varieties of type D. https://arxiv.org/abs/math/0410472

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