Cyclic and cliquewise connectedness of line graphs
✍ Scribed by Christina Zamfirescu
- Book ID
- 104113694
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 189 KB
- Volume
- 170
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
✦ Synopsis
The connectivity and the line connectivity numbers of a graph and of its line graph are dependent on each other. Another important related notion is the cyclic connectedness, and we establish here a strong relationship between the cyclic connectivity number and the cyclic line connectivity number of a graph and of its line graph. Moreover, we introduce a related new notion involving cliques instead of cycles and undertake a similar investigation.
📜 SIMILAR VOLUMES
We introduce a closure concept that turns a claw-free graph into the line graph of a multigraph while preserving its (non-)Hamiltonconnectedness. As an application, we show that every 7-connected claw-free graph is Hamilton-connected, and we show that the well-known conjecture by Matthews and Sumner
## Abstract A graph __G__ is 1‐Hamilton‐connected if __G__−__x__ is Hamilton‐connected for every __x__∈__V__(__G__), and __G__ is 2‐edge‐Hamilton‐connected if the graph __G__+ __X__ has a hamiltonian cycle containing all edges of __X__ for any __X__⊂__E__^+^(__G__) = {__xy__| __x, y__∈__V__(__G__)}