commutative 是什么意思

	adj. 相互的，交互的，(可)交[互]换的。

(of a binary operation) independent of order; as in e.g. "a x b = b x a"

	1.	The groups of the solvable equations are commutative . 可解方程的群都是交换群。
	2.	It should be clear that vector addition is commutative . 可清楚地看到，矢量加法满足对易律。
	3.	The central notion in commutative algebra is that of a prime ideal . 交换代数中最核心的概念就是素理想。
	4.	Multiplication of permutations, unlike multiplication of numbers, is not always commutative . 置换的乘法不同于数的乘法，它并不一定满足交换律。
	5.	Modules with invariant factors over commutative rings 变换环上具有不变因子的模
	6.	Finitely presented dimensions of commutative gr - coherent rings 有限表现维数
	7.	The commutative of semi - prime ring satisfying condition k 半质环的交换性
	8.	On idempotent and nilpotent matrices over commutative rings 关于交换环上的幂等阵与幂零阵
	9.	Matrix transform operations are not necessarily commutative 矩阵变换操作不必是可交换的。
	10.	Almost convex commutative topoloyical semigroups 几乎凸交换拓扑半群

commutative是什么意思