noun
commutativity
Mathematical term for the property that changing the order of operands does not change the result, as in a+b = b+a.
加法の可換性は、a+b = b+a で表される。
The commutativity of addition is expressed as a+b = b+a.
From 可換 (commutative) + 性 (-ness, property). The exact historical derivation is uncertain; the spelling is conventionally associated with the mathematical concept.