結けつ合ごう法ほう則そく

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Meanings

1

noun

associative law

mathematics

Mathematical term for the rule that grouping of operations does not affect the result, e.g., (a+b)+c = a+(b+c).

交こう換かん法ほう則そく
交換法則 (commutative law) concerns the order of operands, while 結合法則 concerns the grouping of operations.
分ぶん配ぱい法ほう則そく
分配法則 (distributive law) links addition and multiplication, unlike 結合法則 which only deals with grouping within a single operation.

Compound of 結合 (combination) and 法則 (law), calque from English 'associative law'.