Invariant deformation theory of affine schemes with reductive group action
Invariant deformation theory of affine schemes with reductive group action
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具有约简群作用的仿射格式不变变形理论
DOI:
10.1016/j.jpaa.2015.02.013
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发表时间:
2015
期刊:
影响因子:
--
通讯作者:
Ronan Terpereau
中科院分区:
文献类型:
--
作者:
Christian Lehn;Ronan Terpereau
We develop an invariant deformation theory, in a form accessible to practice, for affine schemes W equipped with an action of a reductive algebraic group G. Given the defining equations of a G-invariant subscheme X⊂ W, we device an algorithm to compute the universal deformation of X in terms of generators and relations up to a given order. In many situations, our algorithm even computes an algebraization of the universal deformation. As an application, we determine new families of examples of the invariant Hilbert scheme of Alexeev and Brion, where G is a classical group acting on a classical representation, and we describe their singularities.
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影响因子:
0.6
作者:
Y. Ito;I. Nakamura
通讯作者:
I. Nakamura
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
Stavros A. Papadakis;B. V. Steirteghem
通讯作者:
B. V. Steirteghem
DOI:
--
发表时间:
2008
期刊:
Publ. Res. Inst. Math. Sci. 44
影响因子:
--
作者:
Eyral;C;Oka;M.;K.Yamada;A.Hiraki and J.Koolen;川北真之;Kazuhiro Yokoyama;野々村真規子;A.Hiraki and J.Koolen;並河良典
通讯作者:
並河良典
影响因子:
0.8
作者:
R. Terpereau
通讯作者:
R. Terpereau
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
T. Becker
通讯作者:
T. Becker