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arXiv 1602.06200math.CO
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二叉树与格路的寄存器函数与约简

The Register Function and Reductions of Binary Trees and Lattice Paths

Benjamin Hackl, Clemens Heuberger, Helmut Prodinger

摘要:

二叉树的寄存器函数(或Horton-Strahler数)是一个众所周知的组合参数。我们研究了一个减少过程的二叉树,它提供了一个新的解释寄存器功能的最大数量的减少,可以应用到一个给定的树。特别是,精确的渐近行为的某些子结构(“分支”),发生时,减少一棵树反复确定。以同样的方式,我们介绍了一个简单的二维格路径,从它的复杂性措施类似的寄存器功能可以得出减少。我们分析这个数量,以及(累积)的大小(迭代)减少晶格路径渐近。

英文摘要:

The register function (or Horton-Strahler number) of a binary tree is a well-known combinatorial parameter. We study a reduction procedure for binary trees which offers a new interpretation for the register function as the maximal number of reductions that can be applied to a given tree. In particular, the precise asymptotic behavior of the number of certain substructures ("branches") that occur when reducing a tree repeatedly is determined. In the same manner we introduce a reduction for simple two-dimensional lattice paths from which a complexity measure similar to the register function can be derived. We analyze this quantity, as well as the (cumulative) size of an (iteratively) reduced lattice path asymptotically.

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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