摘要

Given a one-factorization F of the complete bipartite graph K-n,K-n, let pf(F) denote the number of Hamiltonian cycles obtained by taking pairwise unions of perfect matchings in F. Let pf(n) be the maximum of pf(F) over all one-factorizations F of K-n,K-n. In this work we prove that pf(n)>= n(2)/4, for all n >= 2

  • 出版日期2015-3-23