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Pentagons and cycle coverings
Authors:Hong Wang
Institution:Department of Mathematics, The University of Idaho, Moscow, Idaho 83844
Abstract:Let G be a graph of order n ≥ 5k + 2, where k is a positive integer. Suppose that the minimum degree of G is at least ?(n + k)/2?. We show that G contains k pentagons and a path such that they are vertex‐disjoint and cover all the vertices of G. Moreover, if n ≥ 5k + 7, then G contains k + 1 vertex‐disjoint cycles covering all the vertices of G such that k of them are pentagons. © 2006 Wiley Periodicals, Inc. J Graph Theory 54: 194–208, 2007
Keywords:cycles  cycle coverings
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