com`mu*ta*tiv"i*ty(?), n. (Math.) the property of a binary operation or operator such that the result of one term operating on a second is equal to the result of the second term operating on the first.
If the symbol "*" is taken to be a commutative binary operator, then the following equation holds: a*b = b*a A common example is the addition operator for real numbers, "+": a+b = b+a
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Wed 13th November 2019