Let G be a 2-connected n-vertex graph and Ns(G) be the total number of s-cliques in G. Let k ≥ 4 and s ≥ 2 be integers. In this paper, we show that if G has an edge e which is not on any cycle of length at least k, then Ns(G) ≤ r k−1 s + t+2 s , where n − 2 = r(k − 3) + t and 0 ≤ t ≤ k − 4. This result settles a conjecture of Ma and Yuan and provides a clique version of a theorem of Fan, Wang and Lv. As a direct corollary, if Ns(G) > r k−1 s + t+2 s , every edge of G is covered by a cycle of length at least k.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.