Article ID Journal Published Year Pages File Type
4657467 Journal of Combinatorial Theory, Series B 2006 6 Pages PDF
Abstract

Thomassen conjectured that every 4-connected line graph is Hamiltonian. A vertex cut X of G is essential if G−X has at least two non-trivial components. We prove that every 3-connected, essentially 11-connected line graph is Hamiltonian. Using Ryjáček's line graph closure, it follows that every 3-connected, essentially 11-connected claw-free graph is Hamiltonian.

Related Topics
Physical Sciences and Engineering Mathematics Discrete Mathematics and Combinatorics