AbstractLet G be a cubic graph of order 2n consisting of a cycle plus a perfect matching and let G∗ be the symmetric digraph obtained from G by replacing each edge of G by two opposite arcs. In this paper we study when G∗ can be decomposed into three hamiltonian circuits and in particular we prove that such a decomposition is impossible if n is even.RésuméSoit G un graphe cubique d'ordre 2n, formé de l'union d'un cycle et d'un couplage parfait. Soit G∗ le graphe orienté symétrique obtenu en remplaçant chaque arête de G par deux arcs opposés. Dans cet article, nous nous intéressons aux décompositions de G∗ en 3 circuits hamiltoniens; en particulier, nous montrons que si n est pair, une telle décomposition est impossible
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Let n ≥ 3 and ⋋ ≥ 1 be integers. Let ⋋Kn denote the complete multigraph with edge-multiplicity ⋋. In...
AbstractLet G be a graph of order n≥3. An even squared Hamiltonian cycle (ESHC) of G is a Hamiltonia...
AbstractA graph G on n vertices is said to be separable cost constant Hamiltonian (SC-Hamiltonian) i...
AbstractCall a directed graph G↔ symmetric if it is obtained from an undirected graph G by replacing...
AbstractIn this paper we prove that the complete symmetric directed graph with n vertices K∗n can be...
AbstractThis paper discusses an attempt at identifying a property of circuits in (nonplanar) graphs ...
AbstractSmith's theorem states that in a cubic graph the number of Hamiltonian cycles containing a g...
Abstract. We consider the dihamiltonian decomposition problem for 3-regular graphs. A graphG is diha...
AbstractIn this paper it is proved that if a graph G has a decomposition into an even (resp., odd) n...
The Hamilton–Waterloo problem asks for which s and r the complete graph Kn can be decomposed into s ...
AbstractThe authors discuss a hamilton surface of a graph, which is a two-dimensional analog of a ha...
AbstractLet G1 and G2 be graphs that are decomposable into Hamilton cycles. Bermond (1978), generali...
AbstractWe show any regular graph of infinite valence that has a two-way-infinite Hamiltonian path e...
We show that a digraph which contains a directed 2-factor and has minimum in-degree and outdegree at...
A conjecture of Alspach and Rosenfeld states that the prism G2K 2 over any 3-connected cubic graph ...
Let n ≥ 3 and ⋋ ≥ 1 be integers. Let ⋋Kn denote the complete multigraph with edge-multiplicity ⋋. In...
AbstractLet G be a graph of order n≥3. An even squared Hamiltonian cycle (ESHC) of G is a Hamiltonia...
AbstractA graph G on n vertices is said to be separable cost constant Hamiltonian (SC-Hamiltonian) i...