== The relationship between rules of sign in multiplication, division and exponent operations and Boolean logic == 
 The rule about real number negatives exactly matches up with the truth table of Logical equality also referred to as XNOR if you define positive as true and negative as false. The exact opposite operation occurs when dealing with imaginary numbers, which are based on the formula of the square root of a negative, and is identical to the truth table of Exclusive or with the same assignment of true and false as real numbers. The relation of signs in multiplication (and division) also mirrors even and odd Parity (mathematics), respectively.