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anticommutative

[an-tee-kuh-myoo-tuh-tiv, -kom-yuh-tey-, an-tahy-] /ˌæn ti kəˈmyu tə tɪv, -ˈkɒm yəˌteɪ-, ˌæn taɪ-/
adjective, Mathematics
1.
(of a binary operation) having the property that one term operating on a second is equal to the negative of the second operating on the first, as ab = −ba.
2.
(of two matrices) defined by an anticommutative operation.
Origin
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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