Let G = (V, E) be a (not necessarily simple) undirected edge-weighted graph with nonnegative weights. A cut C of G is any nontrivial subset of V, and the weight of the cut is the sum of weights of edges crossing the cut. A maxcut is then defined as a cut of G of maximum weight. Determining the maxcut of a graph is an NP-hard problem.
cut | mincut | weighted graph