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arXiv 2108.09414math.CO
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Crank和Mex划分统计量的组合观点

Combinatorial Perspectives on the Crank and Mex Partition Statistics

Brian Hopkins, James A. Sellers, Ae Ja Yee

摘要:

最近有几位作者考虑了整数划分中缺失的最小正部分,称为最小互斥或mex。在这项工作中,我们重新审视和扩展戴森的曲柄统计,墨西哥和Frobenius符号之间的连接,重点是组合证明技术。一个亮点是一个生成函数表达式的分区数与有界曲柄,不包括交替和。这导致了一个组合的解释,涉及类型的杜菲矩形。

英文摘要:

Several authors have recently considered the smallest positive part missing from an integer partition, known as the minimum excludant or mex. In this work, we revisit and extend connections between Dyson's crank statistics, the mex, and Frobenius symbols, with a focus on combinatorial proof techniques. One highlight is a generating function expression for the number of partitions with a bounded crank that does not include an alternating sum. This leads to a combinatorial interpretation involving types of Durfee rectangles.

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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