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A note on hitting maximum and maximal cliques with a stable set
- Publication Year :
- 2011
-
Abstract
- It was recently proved that any graph satisfying $\omega > \frac 23(\Delta+1)$ contains a stable set hitting every maximum clique. In this note we prove that the same is true for graphs satisfying $\omega \geq \frac 23(\Delta+1)$ unless the graph is the strong product of $K_{\omega/2}$ and an odd hole. We also provide a counterexample to a recent conjecture on the existence of a stable set hitting every sufficiently large maximal clique.<br />Comment: 7 pages, two figures, accepted to J. Graph Theory
- Subjects :
- Computer Science - Discrete Mathematics
Mathematics - Combinatorics
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1109.3092
- Document Type :
- Working Paper