commutativity(redirected from Commutative law)
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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