English

Prescribed matchings extend to Hamiltonian cycles in hypercubes with faulty edges

Combinatorics 2013-01-15 v1 Optimization and Control

Abstract

Ruskey and Savage asked the following question: Does every matching of QnQ_{n} for n2n\geq2 extend to a Hamiltonian cycle of QnQ_{n}? J. Fink showed that the question is true for every perfect matching, and solved the Kreweras' conjecture. In this paper we consider the question in hypercubes with faulty edges. We show that every matching MM of at most 2n12n-1 edges can be extended to a Hamiltonian cycle of QnQ_{n} for n2n\geq2. Moreover, we can prove that when n4n\geq4 and MM is nonempty this result still holds even if QnQ_{n} has at most n1M2n-1-\lceil\frac{|M|}{2}\rceil faulty edges with one exception.

Keywords

Cite

@article{arxiv.1301.2931,
  title  = {Prescribed matchings extend to Hamiltonian cycles in hypercubes with faulty edges},
  author = {Fan Wang and Heping Zhang},
  journal= {arXiv preprint arXiv:1301.2931},
  year   = {2013}
}

Comments

16 pages, 10 figures