Geometry of Moduli

Geometry of Moduli
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模量的几何

DOI:
10.1007/978-3-319-94881-2_1
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发表时间:
2018
期刊:
--
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通讯作者:
Bérczi G
Bérczi G
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--
文献类型:
--
作者:
Bérczi G

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相似文献

非约化线性代数群作用的几何不变理论(GIT)的最新结果允许我们分层[X scinH]形式的商栈,其中X是一个投影方案,His是一个线性代数群,其内部分次幂幺根线性作用于X,以这样的方式,每个层[S scinH]都有一个几何不变量S scinH。这导致了模堆叠的分层(例如,投影方案上的层),使得每个层都有一个粗糙的模空间。
Recent results in geometric invariant theory (GIT) for non-reductive linear algebraic group actions allow us to stratify quotient stacks of the form [X∕H], whereXis a projective scheme andHis a linear algebraic group with internally graded unipotent radical acting linearly onX, in such a way that each stratum [S∕H] has a geometric quotientS∕H. This leads to stratifications of moduli stacks (for example, sheaves over a projective scheme) such that each stratum has a coarse moduli space.