n阶图,零图,平凡图,空图。 若G=<V,E>,则VG)=V,E(G=E 静若D=以V,E>,则V(D)=V,E()=E 阶图( (order-n graph):(G)=n 有限图( inite graph): V(G)|<∞ 秦零图(u‖! graph):E=,N 鲁平凡图( trival graph):1阶零图,N 空图( empty graph):V=E=, 《集合论与图论》第14讲《集合论与图论》第14讲 6 n阶图,零图,平凡图,空图 若G=<V,E>, 则V(G)=V, E(G)=E 若D=<V,E>, 则V(D)=V, E(D)=E n阶图(order-n graph): |V(G)|=n 有限图(finite graph): |V(G)|<∞ 零图(null graph): E=∅, Nn 平凡图(trival graph): 1阶零图, N1 空图(empty graph): V=E=∅, ∅