Commutative

a.	1.	Relative to exchange; interchangeable; reciprocal. Rich traders, from their success, are presumed . . . to have cultivated an habitual regard to commutative justice. - Burke.
	2.	(Math.) having the property of commutativity.

Adj.

1.

commutative - of a binary operation; independent of order; as in e.g. "a x b = b x a"

independent, math, mathematics, maths