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arXiv math/0605588math.ACmath.CO
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图上的四面体曲线与Alexander对偶

Tetrahedral curves via graphs and Alexander duality

Christopher A. Francisco

摘要:

四面体曲线是P^3中的(通常是非约化的)曲线,它由单项式生成的一个未混合的高度为2的理想定义。我们的特点是当这些曲线是算术Cohen-Macaulay相关联的一个图形,每个曲线,并使用组合交换代数和亚历山大对偶的结果,有关的互补图的结构的Cohen-Macaulay属性。

英文摘要:

A tetrahedral curve is a (usually nonreduced) curve in P^3 defined by an unmixed, height two ideal generated by monomials. We characterize when these curves are arithmetically Cohen-Macaulay by associating a graph to each curve and, using results from combinatorial commutative algebra and Alexander duality, relating the structure of the complementary graph to the Cohen-Macaulay property.

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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