## Abstract A kernel of a directed graph is a set of vertices __K__ that is both absorbant and independent (i.e., every vertex not in __K__ is the origin of an arc whose extremity is in __K__, and no arc of the graph has both endpoints in __K__). In 1983, Meyniel conjectured that any perfect graph,
On Meyniel's conjecture of the cop number
✍ Scribed by Linyuan Lu; Xing Peng
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 152 KB
- Volume
- 71
- Category
- Article
- ISSN
- 0364-9024
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Meyniel conjectured that the cop number c(G) of any connected graph G on n vertices is at most for some constant C. In this article, we prove Meyniel's conjecture in special cases that G has diameter 2 or G is a bipartite graph of diameter 3. For general connected graphs, we prove , improving the best previously known upper‐bound O(n/ ln__n__) due to Chiniforooshan.
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