「Note」Matroid Union
				Copyright Quack.拟阵?type=header拟阵的定义与常见性质 & 拟阵交算法拟阵的定义与常见性质独立集系统和拟阵定义独立集系统$S=(E,\mathcal{I})$,$E$是...            
		In mathematics you don't understand things, you just get used to them.
In mathematics you don't understand things, you just get used to them.