In the hyperreal number line, it's wrong. In this line, 0 is one of the possible values of h, which is defined as a number which, for all values of n, is greater than -n and less than n. From this it follows that any number divided by 0 equals infinity, because 0 is a non-finite value equal to every other value within h. And thereby the calculus is made respectable. — alan1000
In the hyperreal numbers, division by zero is still impossible.
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