Affine Quotients of Supergroups

Affine Quotients of Supergroups
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超群的仿射商

DOI:
10.1007/s00031-009-9055-z
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发表时间:
2008
影响因子:
0.7
通讯作者:
Alexandr N. Zubkov
Alexandr N. Zubkov
中科院分区:
数学3区
文献类型:
--
作者:
Alexandr N. Zubkov

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在本文中,我们通过自由作用于它们的仿射超群来考虑仿射超方案的层商。给出了这些商仿射的充分必要条件。如果G是一个仿射超群,而他是它的正规超子群,那么我们证明durK-sheaf又是一个仿射超群。另外,如果G是代数,那么aK-sheaf也是一个代数超群并且与之重合。特别是,仿射超群的任何正规超子群都是忠实精确的。
In this paper we consider sheaf quotients of affine superschemes by affine supergroups that act on them freely. The necessary and sufficient conditions for such quotients to be affine are given. IfGis an affine supergroup andHis its normal supersubgroup, then we prove that a durK-sheafis again an affine supergroup. Additionally, ifGis algebraic, then aK-sheafis also an algebraic supergroup and it coincides with. In particular, any normal supersubgroup of an affine supergroup is faithfully exact.