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arXiv 1708.04760math.AC
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关于$G$ -不变Gorenstein理想

On $G$-invariant Gorenstein ideals

Tony J. Puthenpurakal

摘要:

设$k$是域,$G \subseteq Gl_n(k)$是具有$|G|^{-1} \in k$的有限群.设$G$线性作用于$A = k[X_1, \ldots, X_n]$,$A^G$为不变量环.假设不存在$k$上的$G$的任何非平凡一维表示。然后证明了如果$Q$是$A$的$G$ -不变齐性理想,使得$A/Q$是Gorenstein环,则$A^G/Q^G$也是Gorenstein环.

英文摘要:

Let $k$ be a field and $G \subseteq Gl_n(k)$ be a finite group with $|G|^{-1} \in k$. Let $G$ act linearly on $A = k[X_1, \ldots, X_n]$ and let $A^G$ be the ring of invariant's. Suppose there does not exist any non-trivial one-dimensional representation of $G$ over $k$. Then we show that if $Q$ is a $G$-invariant homogeneous ideal of $A$ such that $A/Q$ is a Gorenstein ring then $A^G/Q^G$ is also a Gorenstein ring.

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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