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最大叶数


G 的最大叶数 l(G) 是其任何生成树树叶的最大数量。(相应的最小叶数称为最小叶数。)

G 的最大叶数和连通支配数 d(G) 通过下式连接:

 d(G)+l(G)=|G|,

其中 n=|G|>2G顶点数

许多图族都具有简单的闭合形式,如下表所示。在表中,|_x_| 表示向下取整函数


另请参阅

连通支配集, 连通支配数, 最小叶数, 生成树, 树叶

使用 Wolfram|Alpha 探索

参考文献

Fellows, M.; Lokshtanov, D.; Misra, N.; Mnich, M.; Rosamond, F.; and Saurabh, S. "The Complexity Ecology of Parameters: an Illustration Using Bounded Max Leaf Number." Th. Comput. Sys. 45, 822-848, 2009.Lu, H.-I. and Ravi, R. "Approximating Maximum Leaf Spanning Trees in Almost Linear Time." J. Algorithms 29, 132-141, 1998.Solis-Oba, R. "2-Approximation Algorithm for Finding a Spanning Tree with Maximum Number of Leaves." In Proceedings of Algorithms--ESA '98. 6th Annual European Symposium Venice, Italy, August 24-26, 1998 (Ed. G. Bilardi, G. F. Italiano, A. Pietracaprina, and G. Pucci). Belin: Springer, pp. 441-452, 1998.Zhou, G.; Gen, M.; and Wu, T. "A New Approach to the Degree-Constrained Minimum Spanning Tree Problem Using Genetic Algorithm." In IEEE International Conference on Systems, Man, and Cybernetics, 1996, Vol. 4, pp. 2683-2688, 1996.

请引用为

Weisstein, Eric W. "最大叶数。" 来自 MathWorld--Wolfram Web 资源。 https://mathworld.net.cn/MaximumLeafNumber.html

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