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交換法則
1. commutative lawMathematics
2. Commutative propertyIn mathematics, a binary operation is commutative if changing the order of the operands does not change the result. It is a fundamental property of many binary operations, and many mathematical proofs depend on it. The commutativity of simple operations, such as multiplication and addition of numbers, was for many years implicitly assumed and the property was not named until the 19th century when mathematics started to become formalized. By contrast, division and subtraction are not commutative.
Read “Commutative property” on English Wikipedia
Read “交換法則” on Japanese Wikipedia
Read “Commutative property” on DBpedia
Read “Commutative property” on English Wikipedia
Read “交換法則” on Japanese Wikipedia
Read “Commutative property” on DBpedia
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