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arXiv 0903.0705math.CO
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Chung-Feller定理II的推广

Generalizations of Chung-Feller Theorem II

Jun Ma, Yeong-nan Yeh

摘要:

经典的Chung-Feller定理[2]告诉我们,长度为$n$且带有$m$缺陷的Dyck路的个数是$n$阶Catalan数,且与$m$无关. L. Shapiro [9]发现了Motzkin路径的Chung-Feller性质。Mohanty的书[5]用了整整一节来探讨Chung-Feller定理。许多Chung-Feller定理是[5]结果的推广。本文考虑了$(n,m)$ -格路。研究了$(n,m)$ -格点路径的两个参数:非正长度和最右最小长度。利用双射方法得到了关于这两个参数的$(n,m)$ -格路的Chung-Feller定理。我们对点$(n,m)$ -格路径更感兴趣。本文研究了点$(n,m)$ -格点路径的两个参数:点非正长度和点最右最小长度。我们推广了[5]中的结果。利用本文的主要结果,我们可以找到许多不同格路的Chung-Feller定理。

英文摘要:

The classical Chung-Feller theorem [2] tells us that the number of Dyck paths of length $n$ with $m$ flaws is the $n$-th Catalan number and independent on $m$. L. Shapiro [9] found the Chung-Feller properties for the Motzkin paths. Mohanty's book [5] devotes an entire section to exploring Chung-Feller theorem. Many Chung-Feller theorems are consequences of the results in [5]. In this paper, we consider the $(n,m)$-lattice paths. We study two parameters for an $(n,m)$-lattice path: the non-positive length and the rightmost minimum length. We obtain the Chung-Feller theorems of the $(n,m)$-lattice path on these two parameters by bijection methods. We are more interested in the pointed $(n,m)$-lattice paths. We investigate two parameters for an pointed $(n,m)$-lattice path: the pointed non-positive length and the pointed rightmost minimum length. We generalize the results in [5]. Using the main results in this paper, we may find the Chung-Feller theorems of many different lattice paths.

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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