Two ways of introducing commutative products for cochains on a topological space are developed. 本文对于一般拓扑空间与有1交换环,用两种方式定义上链的可交换乘法。
When you combine these operations, the results are not commutative- the order in which you multiply matrices is important. 当你在组合这些操作的时候,矩阵的运算顺序是不可交换的,不同相乘顺序会导致不同的变换效果,这点很重要。
This paper introduces theσ_ automorphism for finite dimensional commutative associative algebras and studies the structure ofσ_ semisimple algebras andσ_ nilpotent algebras. 通过引入有限维交换结合代数的σ自同态映射,研究了σ半单代数和σ幂零代数的结构。
commutative
[ adj ] (of a binary operation) independent of order; as in e.g. <adj.all> a x b = b x a
Commutative \Com*mut"a*tive\, a. [CF. F. commutatif.] 1. Relative to exchange; interchangeable; reciprocal. -- {Com*mut"a*tive"ly}, adv.
Rich traders, from their success, are presumed . . . to have cultivated an habitual regard to commutative justice. --Burke.
2. (Math.) having the property of {commutativity}. [PJC]