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Spherical variety : ウィキペディア英語版 | Spherical variety In algebraic geometry, given a reductive algebraic group ''G'' and a Borel subgroup ''B'', a spherical variety is a ''G''-variety with an open dense ''B''-orbit. It is sometimes also assumed to be normal. Examples are flag varieties, symmetric space and (affine or projective) toric varieties. A projective spherical variety is a Mori dream space. has shown that every "smooth" affine spherical variety is uniquely determined by its weight monoid. (see Brion for the definition of weight monoid.) == See also ==
*Luna–Vust theory
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Spherical variety」の詳細全文を読む
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