| Antonio,
I wonder why the formulas didn't come out this time?
Anyway, when you say "x is equivalent to y" then you mean that the size of the measurmenet of x will be equal to the size of the measurement of y, right? Because that is it's mathematicla meaning. But if what you mean is that if there is x there y and viceversa, then you might say it "if an only if x then y" which means x<-->y if there is one, there is the other. Or do you mean another thing apart from these two? |