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arXiv 1602.01996math.COmath.SP
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分形图上生成树的计数及其渐近复杂性

Counting spanning trees on fractal graphs and their asymptotic complexity

Jason A. Anema, Konstantinos Tsougkas

摘要:

利用谱抽取的方法和Kirchhoff矩阵树定理的一个修正形式,在定理\ref{thm:maintheoremfull}中给出了一个关于将图近似为分枝分形上的完全对称自相似结构的生成树个数的封闭形式的解.我们展示了如何频谱抽取意味着存在的渐近复杂性常数,并获得一些bounds.Examples计算包括Sierpinski垫片,一个非后临界有限模拟Sierpinski垫片,钻石分形,和Hespinski垫片。对于每一个例子,渐近复杂性常数。

英文摘要:

Using the method of spectral decimation and a modified version of Kirchhoff's Matrix-Tree Theorem, a closed form solution to the number of spanning trees on approximating graphs to a fully symmetric self-similar structure on a finitely ramified fractal is given in Theorem \ref{thm:maintheoremfull}. We show how spectral decimation implies the existence of the asymptotic complexity constant and obtain some bounds for it. Examples calculated include the Sierpinski Gasket, a non post critically finite analog of the Sierpinski Gasket, the Diamond fractal, and the Hexagasket. For each example, the asymptotic complexity constant is found.

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