## Abstract It is well known that certain graphβtheoretic extremal questions play a central role in the study of communication network vulnerability. Herein we consider a generalization of some of the classical results in this area. We define a (__p__, Ξ, Ξ΄, Ξ») graph as a graph having __p__ points,
Graphs with prescribed connectivity and line graph connectivity
β Scribed by Douglas Bauer; Ralph Tindell
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- English
- Weight
- 118 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0364-9024
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
Chartrand and Stewart have shown that the line graph of an nβconnected graph is itself nβconnected. This paper shows that for every pair of integers m > n > 1 there is a graph of point connectivity n whose line graph has point connectivity m. The corresponding question for line connectivity is also resolved.
π SIMILAR VOLUMES
We show that any line graph contains a set of three vertices which is not included in a smallest separating vertex set. This was conjectured by Maurer and Slater. ## 1998 Academic Press Let }(G) denote the vertex connectivity of a graph G. A set of }(G) vertices which separates G will be called a
## Abstract Let __G__ be a graph and let __V__~0~β=β{Ξ½β __V__(__G__): __d__~__G__~(Ξ½)β=β6}. We show in this paper that: (i) if __G__ is a 6βconnected line graph and if |__V__~0~|ββ€β29 or __G__[__V__~0~] contains at most 5 vertex disjoint __K__~4~'s, then __G__ is Hamiltonβconnected; (ii) every 8βco