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Hamiltonian and Pancyclic Graphs in the Class of Self-Centered Graphs with Radius Two

机译:半径为2的自居图类中的哈密顿图和泛圈图

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The paper deals with Hamiltonian and pancyclic graphs in the class of all self-centered graphs of radius 2. For both of the two considered classes of graphs we have done the following. For a given number n of vertices, we have found an upper bound of the minimum size of such graphs. For n ≤ 12 we have found the exact values of the minimum size. On the other hand, the exact value of the maximum size has been found for every n . Moreover, we have shown that such a graph (of order n and) of size m exists for every m between the minimum and the maximum size. For n ≤ 10 we have found all nonisomorphic graphs of the minimum size, and for n = 11 only for Hamiltonian graphs.
机译:本文在半径为2的所有自中心图的类别中处理Hamiltonian图和全环图。对于两个考虑的图类别,我们都执行了以下操作。对于给定数量的顶点,我们发现了此类图的最小尺寸的上限。对于n≤12,我们找到了最小尺寸的确切值。另一方面,已经发现每n个最大大小的确切值。而且,我们已经表明,对于最小和最大尺寸之间的每m个,存在这样一个尺寸为m的图(n阶)。对于n≤10,我们找到了所有最小尺寸的非同构图,对于n = 11,仅对于哈密顿图。

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