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arXiv 1608.08962math.AG
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可逆多项式的Orbifold Jacobian代数

Orbifold Jacobian algebras for invertible polynomials

Alexey Basalaev, Atsushi Takahashi, Elisabeth Werner

摘要:

多项式$f$的一个重要不变量是由其偏导数定义的雅可比代数。设$f$关于有限对角对称群$G$的作用是不变的。当$f$是可逆多项式时,我们公理化地定义了$(f,G)$对的轨道Jacobian $\mathbb{Z}/2\mathbb{Z}$ -分次代数,并证明了它的存在唯一性。在$f$定义ADE奇点的情况下,我们说明了它的几何意义。

英文摘要:

An important invariant of a polynomial $f$ is its Jacobian algebra defined by its partial derivatives. Let $f$ be invariant with respect to the action of a finite group of diagonal symmetries $G$. We axiomatically define an orbifold Jacobian $\mathbb{Z}/2\mathbb{Z}$-graded algebra for the pair $(f,G)$ and show its existence and uniqueness in the case, when $f$ is an invertible polynomial. In case when $f$ defines an ADE singularity, we illustrate its geometric meaning.

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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