### commutative

«
1 / 10
»
commutative 交换的

com-, 强调。-mut, 改变，交换，词源同move, mutable.

1530s, from Medieval Latin commutativus, from Latin commutat-, past participle stem of commutare (see commute (v.)).
1. Multiplication of permutations , unlike multiplication of numbers, is not always commutative.

2. The central notion in commutative algebra is that of a prime ideal.

3. It'should be clear that vector addition is commutative.

4. The groups of the solvable equations are commutative.

5. Basic properties of the dense sub - semigroups in commutative groups are studied.