arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2107.04717math.CO
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circular permutations中的连续模式

Consecutive patterns in circular permutations

Sergi Elizalde, Bruce Sagan

摘要:

在他们对循环模式包容性的研究中,Domagalski等人猜想了避免长度为3的连续模式的循环排列的生成函数的微分方程。本文证明并推广了这些定理。我们表明,对于每个连续模式$σ$开始于1,二元生成函数计数出现的$σ$在循环排列可以得到从生成函数计数出现的$σ$(线性)排列。这包括后一种生成函数已知的所有模式。

英文摘要:

In their study of cyclic pattern containment, Domagalski et al. conjecture differential equations for the generating functions of circular permutations avoiding consecutive patterns of length 3. In this note, we prove and significantly generalize these conjectures. We show that, for every consecutive pattern $σ$ beginning with 1, the bivariate generating function counting occurrences of $σ$ in circular permutations can be obtained from the generating function counting occurrences of $σ$ in (linear) permutations. This includes all the patterns for which the latter generating function is known.

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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