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
Packing bipartite graphs
β Scribed by A. Pawel Wojda; Paul Vaderlind
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 383 KB
- Volume
- 164
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
β¦ Synopsis
For two bipartite graphs G = (L, R; E) and G' = (L', R'; E') a bijection f: LwR --* L'uR' such that f(L) = L' is called hi-placement when f(u)f(v)~E', for every edge uv ~ E (then G and G' are called hi-placeable).
We give new sufficient conditions for bipartite graphs G and G' to be bi-placeable. When As(G) = AR(G') = 1 (i.e. when all vertices of R and R' are pendent or isolated), we prove a necessary and sufficient condition for G and G' to be bi-placeable.
π SIMILAR VOLUMES
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
## Theorem. A Steinhaus graph is bipartite if and only if it has no triangles. Theorem. If G is a bipartite Steinhaus graph (G ~-~) with partitions X and Y, where Ixl-< IYI, then G has an X-saturated matching.