Abstract
Let G be a simple \(m\times m\) bipartite graph with minimum degree \(\delta (G)\ge m/2+1\). We prove that for every pair of vertices x, y, there is a Hamiltonian cycle in G such that the distance between x and y along that cycle equals k, where \(2\le k<m/6\) is an integer having appropriate parity. We conjecture that this is also true up to \(k\le m\).
Similar content being viewed by others
References
Ash, P., Jackson, B.: Dominating cycles in bipartite graphs. In: Bondy, J.A., Murty, U.S.R. (eds.) Progress in Graph Theory, pp. 81–87. Academic Press, New York (1984)
Hui, D., Faudree, R., Lehel, J., Yoshimoto, K.: A panconnectivity theorem for bipartite graphs (submitted)
Faudree, R., Li, Hao: Locating pairs of vertices on a Hamiltonian cycle. Discrete Math. 321, 2700–2706 (2012)
Faudree, R., Lehel, J., Yoshimoto, K.: Note on locating pairs of vertices on a Hamiltonian cycle. Graphs Combin. 30, 887–894 (2014)
Jackson, B.: Long cycles in bipartite graphs. J. Combin. Theory, Ser. B 38, 118–131 (1985)
Nash-Williams, C.St.J.A.: Edge-disjoint Hamiltonian circuits in graphs with vertices of large valency. In: Studies in Pure Mathematics. Academic Press, London, pp. 157–183 (1971)
Whitney, H.: Congruent graphs and the connectivity of graphs. Am. J. Math. 54, 150–168 (1932)
Williamson, J.: Panconnected graphs II. Period. Math. Hungar. 8, 105–116 (1977)
Author information
Authors and Affiliations
Corresponding author
Additional information
This work was supported by JSPS KAKENHI Grant Number 26400190.
Rights and permissions
About this article
Cite this article
Faudree, R.J., Lehel, J. & Yoshimoto, K. Locating Pairs of Vertices on a Hamiltonian Cycle in Bigraphs. Graphs and Combinatorics 32, 963–986 (2016). https://doi.org/10.1007/s00373-015-1626-2
Received:
Revised:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00373-015-1626-2