Detecting wheels
arXiv:1308.6433 · doi:10.2298/AADM131128023D
Abstract
A \emph{wheel} is a graph made of a cycle of length at least~4 together with a vertex that has at least three neighbors in the cycle. We prove that the problem whose instance is a graph and whose question is "does contains a wheel as an induced subgraph" is NP-complete. We also settle the complexity of several similar problems.