2017/11/10;2017/11/10;2017/11/10;2017/11/10;2017/11/10;2017/11/10;2017/11/10;2017/11/10;2017/11/10;2017/11/10;2017/11/10;2017/11/10;2017/11/10;定义由非空有限集合V和有限多重集E组成的二元组G = 称为图模型简称为图其中 1V = {v1, v2