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A generalization of Tutte's theorem on Hamiltonian cycles in planar graphs

机译:平面图中哈密顿圈上的Tutte定理的推广

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摘要

In 1956, W.T. Tutte proved that a 4-connected planar graph is hamiltonian. Moreover, in 1997, D.P. Sanders extended this to the result that a 4-connected planar graph contains a hamiltonian cycle through any two of its edges. We prove that a planar graph G has a cycle containing a given subset X of its vertex set and any two prescribed edges of the subgraph of G induced by X if vertical bar X vertical bar >= 3 and if X is 4-connected in G. If X = V(G) then Sanders' result follows.
机译:1956年,W.T。Tutte证明了四连通平面图是哈密顿图。此外,在1997年,D.P。桑德斯将其扩展为以下结果:4个连接的平面图包含通过其任意两个边缘的哈密顿循环。我们证明平面图G的循环包含给定顶点集的给定子集X以及如果垂直条X垂直条> = 3且X在G中为4个连接点,则X引起的G子图的任何两个规定边如果X = V(G),则桑德斯的结果如下。

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