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arXiv 1301.1602math.AC
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一般完全交的单项理想的符号幂

Symbolic powers of monomial ideals which are generically complete intersections

Adnan Aslam

摘要:

我们对余维为2的非混合单项式理想I进行了分类,这些理想一般是完全交,并且具有符号幂代数A(I)是标准分次的性质。当I是二部图的点覆盖理想的一个修改时,我们给出了A(I)的生成元的最高度的一个下界,并证明了这个最高度可以是任意给定的数.当I是一般为完全交的单项理想时,我们进一步给出了A(I)的整闭包的生成元的最高次数的一个上界.

英文摘要:

We classify all unmixed monomial ideals I of codimension 2 which are generically a complete intersection and which have the property that the symbolic power algebra A(I) is standard graded. We give a lower bound for the highest degree of a generator of A(I) in the case that I is a modification of the vertex cover ideal of a bipartite graph, and show that this highest degree can be any given number. We furthermore give an upper bound for the highest degree of a generator of the integral closure of A(I) in the case that I is a monomial ideal which is generically a complete intersection.

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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