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Seminar
FIELD	Mathematics
DATE	December 16 (Thu), 2021
TIME	16:00-18:00
PLACE	Online
SPEAKER	Brion, Michel
HOST	Park, Kyeong-Dong
INSTITUTE	Institut Fourier, Universite Grenoble Alpes
TITLE	Embeddings of spherical homogeneous spaces
ABSTRACT	Spherical varieties form a remarkable class of algebraic varieties equipped with an action of an algebraic group, which contains several classes of interest: toric varieties, projective homogeneous varieties, symmetric spaces, wonderful varieties. Toric varieties are classified by fans, which provide a well-developed dictionary between their geometry and combinatorics. This makes toric varieties an excellent testing ground for algebro-geometric questions, even if they form a very special class. Spherical varieties are much more general, and include many examples from classical projective geometry. They also admit a combinatorial classification, whose relation to geometry is less understood. The lectures will present basic results on spherical varieties, together with the relevant background on the structure, actions and representations of algebraic groups. They will conclude with open questions. Lecture 3: Embeddings of spherical homogeneous spaces, December 16 (Thursday) 16:00-18:00 (KST, GMT +9) - Embeddings of spherical homogeneous spaces; wonderful varieties; open questions. https://sites.google.com/view/eag-seminar LINK: https://zoom.us/j/2906238932 Meeting ID: 290 623 8932
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