It is shown that for any 4-regular graph G there is a collection F of paths of length 4 such that each edge of G belongs to exactly two of the paths and each vertex of G occurs exactly twice as an endvertex of a path of y. This proves a special case of a conjecture of Bondy. 0 1996 John Wiley & Sons
Perfect path double covers in every simple graph
β Scribed by Hao Li
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- English
- Weight
- 229 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0364-9024
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
We prove in this paper that every simple graph G admits a perfect path double cover (PPDC), i.e., a set of paths of G such that each edge of G belongs to exactly two of the paths and each vertex of G is an end of exactly two of the paths, where a path of length zero is considered to have (identical) ends. This was conjectured by A. Bondy in 1988.
π SIMILAR VOLUMES
An induced path-cycle double cover (IPCDC) of a simple graph G is a family F Γ {F 1 , . . . , F k } of induced paths and cycles of G such that if F i Κ F j x M, then F i Κ F j is a vertex or an edge, for i x j, each edge of G appears in precisely two of the F i 's, and each vertex of G appears in pr