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arXiv 0906.5129math.ACmath.AG
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环面代数的高Veronese子环的环面理想

Toric ideals for high Veronese subrings of toric algebras

Takafumi Shibuta

摘要:

证明了环面代数的充分高Veronese子环的定义理想存在一个由二项式构成的二次Gröbner基。更一般地,我们证明了标准分次环的充分高Veronese子环的定义理想允许二次Gröbner基。本文给出了$d$的一个下界,使得$d$ -th Veronese子环的定义理想包含一个二次Gröbner基. Eisenbud-Reeves-Totaro在没有证明$d$的某些下界的情况下陈述了相同的定理。在许多情况下,我们的下界小于Eisenbud-Reeves-Totaro的下界。

英文摘要:

We prove that the defining ideal of a sufficiently high Veronese subring of a toric algebra admits a quadratic Gröbner basis consisting of binomials. More generally, we prove that the defining ideal of a sufficiently high Veronese subring of a standard graded ring admits a quadratic Gröbner basis. We give a lower bound on $d$ such that the defining ideal of $d$-th Veronese subring admits a quadratic Gröbner basis. Eisenbud--Reeves--Totaro stated the same theorem without a proof with some lower bound on $d$. In many cases, our lower bound is less than Eisenbud--Reeves--Totaro's lower bound.

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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