University of TehranJournal of Algorithms and Computation2476-277649120170601Edge-tenacity in Networks4553798010.22059/jac.2017.7980ENDara MoazzamiUniversity of Tehran, College of Engineering, Department of Engineering ScienceJournal Article20160830Numerous networks as, for example, road networks, electrical networks and communication networks can be modeled by a graph. Many attempts have been made to determine how well such a network is "connected" or stated differently how much effort is required to break down communication in the system between at least some nodes. Two well-known measures that indicate how "reliable" a graph is are the "Tenacity" and "Edge-tenacity" of a graph. In this paper we present results on the tenacity and edge-tenacity, $T_e(G)$, a new invariant, for several classes of graphs. Basic properties and some bounds for edge-tenacity, $T_e(G)$, are developed. Edge-tenacity values for various classes of graphs are calculated and future work andconcluding remarks are summarizedhttps://jac.ut.ac.ir/article_7980_d39c785dea8c5952d0d192f44c767675.pdf