Wang, H., Partition of bipartite graph into cycles, Discrete Mathematics 117 (1993) 287-291. El-Zahar (1984) conjectured that if G is a graph on n, + n, + + nk vertices with ni > 3 for 1s i < k and minimum degree 6(G)>rn,/21+rn2/21+ ... +rn,/21, then G contains k vertex-disjoint cycles of lengths n,
Partition of a bipartite hamiltonian graph into two cycles
β Scribed by Denise Amar
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 480 KB
- Volume
- 58
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
β¦ Synopsis
We prove the following theorem. "I'neorem. If G is a balanced bipartite graph with bipartition (A, B), [A I = IBI = n, such that for any x ~ A, y ~ B, d(x) + d(y) >>-n + 2, then for any (nl, n2), ni >I 2, n -----n I + hE, G contains two independent cycles of lengths 2nl and 2n2.
π SIMILAR VOLUMES
Let D = (V1, V2; A) be a directed bipartite graph with II/11 = 11/21 = n ~> 2. Suppose that do(x) + do(y) >~ 3n + 1 for all xe I/1 and ye V2. Then D contains two vertex-disjoint directed cycles of lengths 2nl and 2n2, respectively, for any positive integer partition n = n~ + n2. Moreover, the condit
## Abstract We give necessary and sufficient conditions for the existence of an alternating Hamiltonian cycle in a complete bipartite graph whose edge set is colored with two colors.
For two integers a and b, we say that a bipartite graph G admits an (a, b)bipartition if G has a bipartition (X, Y ) such that |X| = a and |Y | = b. We say that two bipartite graphs G and H are compatible if, for some integers a and b, both G and H admit (a, b)-bipartitions. In this paper, we prove
For two integers a and b, we say that a bipartite graph G admits an ( a , b)-bipartition if G has a bipartition ( X , Y ) such that /XI = a and ( Y / = b. We say that two bipartite graphs G and H are compatible if, for some integers a and b, both G and H admit ( a , b)-bipartitions. In this note, w
## Abstract A simple graph __G__ has the neighbourβclosedβcoβneighbour property, or ncc property, if for all vertices __x__ of __G__, the subgraph induced by the set of neighbours of __x__ is isomorphic to the subgraph induced by the set of nonβneighbours of __x__. We present characterizations of g