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 (kŏm′yə-tā′tĭv, kə-myo͞o′tə-tĭv)
1. Relating to, involving, or characterized by substitution, interchange, or exchange.
2. Independent of order. Used of a logical or mathematical operation that combines objects or sets of objects two at a time. If a × b = b × a, the operation indicated by × is commutative.

com·mu′ta·tiv′i·ty (kə-myo͞o′tə-tĭv′ĭ-tē) n.


the property of being commutative
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References in periodicals archive ?
A commutative semigroup is a semigroup with a commutative operation. If S is also a Hausdorff topological space and the binary operation is continuous for the product topology of S x S, then S is said to be a topological semigroup.
To help students discover the advantages of the associative rule, for example, one can present them with the following commutative operation on {1,2,3,4,5}:
Furthermore, objects with commutative operations would require only some form of causal ordering among replicas.