Go backward to Constrained Function Definitions
Go up to Top
Go forward to Implicit Function Definitions
mult: R != 0 x R != 0 -> R != 0 mult(x, y) := x*y
For all real numbers x != 0, y != 0, we have
mult(x, y)/y = x.
However, we do not know the value of
mult(0, y)therefore we must not conclude mult(0, y)/y = 0.