English

Almost all k-cop-win graphs contain a dominating set of cardinality k

Combinatorics 2014-06-12 v2

Abstract

We consider kk-cop-win graphs in the binomial random graph G(n,1/2).G(n,1/2). It is known that almost all cop-win graphs contain a universal vertex. We generalize this result and prove that for every kNk \in N, almost all kk-cop-win graphs contain a dominating set of cardinality kk. From this it follows that the asymptotic number of labelled kk-cop-win graphs of order nn is equal to (1+o(1))(12k)k(nk)2n2/2(1/2log2(12k))n(1+o(1)) (1-2^{-k})^{-k} {n \choose k} 2^{n^2/2 - (1/2-\log_2(1-2^{-k})) n}.

Keywords

Cite

@article{arxiv.1305.1676,
  title  = {Almost all k-cop-win graphs contain a dominating set of cardinality k},
  author = {Pawel Pralat},
  journal= {arXiv preprint arXiv:1305.1676},
  year   = {2014}
}