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arXiv 1602.02664math.CO
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算术拟阵Tutte多项式的卷积公式及其它组合结构

A convolution formula for Tutte polynomials of arithmetic matroids and other combinatorial structures

Spencer Backman, Matthias Lenz

摘要:

在这篇文章中,我们将Kook-Reiner-Stanton和Etienne-Las Vergnas的Tutte多项式的卷积公式推广到更一般的设置,包括算术拟阵和δ-拟阵。作为推论,我们得到新的证明的两个积极的结果,伪算术拟阵和算术Tutte多项式在无穷多个点的算术流和着色的组合解释。我们还展示了连接与分解的Dahmen-Micchelli空间和晶格点计数zonotopes。

英文摘要:

In this note we generalize the convolution formula for the Tutte polynomial of Kook-Reiner-Stanton and Etienne-Las Vergnas to a more general setting that includes both arithmetic matroids and delta-matroids. As corollaries, we obtain new proofs of two positivity results for pseudo-arithmetic matroids and a combinatorial interpretation of the arithmetic Tutte polynomial at infinitely many points in terms of arithmetic flows and colorings. We also exhibit connections with a decomposition of Dahmen-Micchelli spaces and lattice point counting in zonotopes.

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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