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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 ?
The so-called "quantum question" equality presented by Wang et al shows how the very same quantum probability theory that explain otherwise mysterious noncommutativity of measurements in physics, can also provide excellent measurement predictions for question order effects in social and behavioral science experiments.
The thinking is that such noncommutativity should arise from quantum gravity effects and allows us to model these in an effective description without full knowledge of quantum gravity itself (this not being known).
Due to noncommutativity, it clearly matters whether, for [absolute value of i-j] = 1, [G.
Since their introduction by Fueter ([6]) in 1935, they are called regular functions, and the same name is reserved to the solutions of three other type of equations which take into the account the noncommutativity of the quaternionic field H and the conjugate quaternionic variable [bar.
The main problem relates to the noncommutativity of matrix multiplication.