Some known results on claw-free (Kl,3-free) graphs are generalized to the larger class of almost claw-free graphs which were introduced by RyjaEek. In particular, w e show that a 2-connected almost claw-free graph is I-tough, and that a 2-connected almost claw-free graph on n vertices is hamiltonian
Almost claw-free graphs
✍ Scribed by Zdeněk Ryjáček
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 374 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0364-9024
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✦ Synopsis
Abstract
We say that G is almost claw‐free if the vertices that are centers of induced claws (K~1,3~) in G are independent and their neighborhoods are 2‐dominated. Clearly, every claw‐free graph is almost claw‐free. It is shown that (i) every even connected almost claw‐free graph has a perfect matching and (ii) every nontrivial locally connected K~1,4~‐free almost claw‐free graph is fully cycle extendable.
📜 SIMILAR VOLUMES
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