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arXiv 0808.3753math.AGmath.RT
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非交换Hilbert格式的Hilbert-Chow态射与线性表示的模空间

Hilbert-Chow morphism for non commutative Hilbert schemes and moduli spaces of linear representations

Federica Galluzzi, Francesco Vaccarino

摘要:

设$k$是交换环,$R$是交换$k-$代数.本文的目的是定义和讨论与图的表示理论相关的一些图之间的连接态射(不一定是可交换的)$R-$代数$A. $我们专注于$A, $的$n-$维表示的方案$\ran//\GL_n$,对$A$的余维$n$的左理想进行参数化的Hilbert方案$\Hilb_A^n$,以及对分割的阿贝尔化的仿射方案Spec $Γ_R^n(A)^{ab} $。本文给出了从$\Hilb_A^n$到Spec $Γ_R^n(A)^{ab} $的Grothendieck-Deligne范数映射的推广,它专门研究了当$A$是可交换的,$k$是代数闭域时几何点上的Hilbert Chow态射.描述希尔伯特方案作为一个主丛的基础,我们将通过模空间$\ran//\GL_n$因子这个映射给出一个很好的描述这个希尔伯特-周态射,从而证明它是投射的。

英文摘要:

Let $k$ be a commutative ring and let $R$ be a commutative $k-$algebra. The aim of this paper is to define and discuss some connection morphisms between schemes associated to the representation theory of a (non necessarily commutative) $R-$algebra $A. $ We focus on the scheme $\ran//\GL_n$ of the $n-$dimensional representations of $A, $ on the Hilbert scheme $\Hilb_A^n$ parameterizing the left ideals of codimension $n$ of $A$ and on the affine scheme Spec $Γ_R^n(A)^{ab} $ of the abelianization of the divided powers of order $n$ over $A. $ We give a generalization of the Grothendieck-Deligne norm map from $\Hilb_A^n$ to Spec $Γ_R^n(A)^{ab} $ which specializes to the Hilbert Chow morphism on the geometric points when $A$ is commutative and $k$ is an algebraically closed field. Describing the Hilbert scheme as the base of a principal bundle we shall factor this map through the moduli space $\ran//\GL_n$ giving a nice description of this Hilbert-Chow morphism, and consequently proving that it is projective.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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