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arXiv 1609.06396math.ACmath.RT
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关于给定次数的无平方根单项式生成的理想

On the ideal generated by all squarefree monomials of a given degree

Federico Galetto

摘要:

给出了由给定次数的所有平方自由单项式生成的理想的最小自由分解的一个显式构造。这种构造依赖于并表现了合合模上的对称群的自然作用。在任意系数环上获得的分辨率,特别是,它是特征自由。给出了两个应用:钩划分索引的De Concini-Procesi环的等变分解和FI-模的分解。

英文摘要:

An explicit construction is given of a minimal free resolution of the ideal generated by all squarefree monomials of a given degree. The construction relies upon and exhibits the natural action of the symmetric group on the syzygy modules. The resolution is obtained over an arbitrary coefficient ring; in particular, it is characteristic free. Two applications are given: an equivariant resolution of De Concini-Procesi rings indexed by hook partitions, and a resolution of FI-modules.

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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