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arXiv 0908.1946math.ACmath.CO
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Gotzmann边理想

Gotzmann Edge Ideals

Andrew H. Hoefel

摘要:

设P = k[x_1,...,x_n]是n元多项式环。P的一个d次生成的齐次理想I称为Gotzmann,如果它在所有d次同维数的齐次理想中具有最小可能的Hilbert函数。单图G的顶点x_1,.,x_n是由所有x_i x_j生成的二次无平方根单项式理想,其中{x_i,x_j}是G的一条边.唯一的边理想是Gotzmann是那些对应于星图的边理想。

英文摘要:

Let P = k[x_1, ..., x_n] be the polynomial ring in n variables. A homogeneous ideal I of P generated in degree d is called Gotzmann if it has the smallest possible Hilbert function out of all homogeneous ideals with the same dimension in degree d. The edge ideal of a simple graph G on vertices x_1, ..., x_n is the quadratic square-free monomial ideal generated by all x_i x_j where {x_i,x_j} is an edge of G. The only edge ideals that are Gotzmann are those edge ideals corresponding to star graphs.

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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