弦和圈的算术秩
Arithmetical rank of strings and cycles
摘要:
设$R$是域$K$上的多项式环.对于一个给定的无平方根单项理想$I \subset R$,我们可以把一个超图$H(I)$联系起来。本文证明了当$H(I)$为弦超图或圈超图时,$I$的算术秩等于$R/I$的投影维数.
英文摘要:
Let $R$ be a polynomial ring over a field $K$. To a given squarefree monomial ideal $I \subset R$, one can associate a hypergraph $H(I)$. In this article, we prove that the arithmetical rank of $I$ is equal to the projective dimension of $R/I$ when $H(I)$ is a string or a cycle hypergraph.
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。