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arXiv 0810.2926math.AGmath.ACmath.RT
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秩1模上的Lie-Rinehart上同调与可积联络

Lie-Rinehart cohomology and integrable connections on modules of rank one

Eivind Eriksen, Trond Stølen Gustavsen

摘要:

设$k$是特征为0的代数闭域,$R$是交换$k$ -代数,$M$是秩为1的无挠的$R$ -模,其连接为$\nabla$ .我们考虑了值在$End_{R}(M)$中的Lie-Rinehart上同调及其诱导联络,并利用$M$上的可积联络给出了这个上同调的一个解释.当$R$是一个$d\geq2$维孤立奇点时,我们将Lie-Rinehart上同调与奇点环的拓扑上同调联系起来;当$R$是一个二维拟齐次超曲面时,我们给出了上同调的完整计算.

英文摘要:

Let $k$ be an algebraically closed field of characteristic 0, let $R$ be a commutative $k$-algebra, and let $M$ be a torsion free $R$-module of rank one with a connection $\nabla$. We consider the Lie-Rinehart cohomology with values in $End_{R}(M)$ with its induced connection, and give an interpretation of this cohomology in terms of the integrable connections on $M$. When $R$ is an isolated singularity of dimension $d\geq2$, we relate the Lie-Rinehart cohomology to the topological cohomology of the link of the singularity, and when $R$ is a quasi-homogenous hypersurface of dimension two, we give a complete computation of the cohomology.

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