2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/26243The notion of k-clique percolation in random graphs is introduced, where k is the size of the complete subgraphs whose large scale organizations are analytically and numerically investigated. For the Erdos-Renyi graph of N vertices we obtain that the percolation transition of k-cliques takes place when the probability of two vertices being connected by an edge reaches the threshold pc(k)=[(k-1)N]^{-1/(k-1)}. At the transition point the scaling of the giant component with N is highly non-trivial and depends on k. We discuss why clique percolation is a novel and efficient approach to the identification of overlapping communities in large real networks.4 pages, 3 figures, to be published in Phys. Rev. LettDisordered Systems and Neural NetworksStatistical MechanicsBiological Physicstext