[vrwc1]

No. Not backing away from it. It's just another possible way of dealing with it. Your earlier question suggested me that you were wanting to know how to store a divide by zero result in memory. That's where the arbitrary value and null value ideas come into play. They aren't the only methods of dealing with it.

As I've said, exception handling is normally sufficient.

So since there are so many ways of dealing with the divide by zero problem in a computer program, the concept of "nullity" isn't really useful to programmers, right?

[JamesP81]

So since there are so many ways of dealing with the divide by zero problem in a computer program, the concept of "nullity" isn't really useful to programmers, right?

I wouldn't say its not useful, but maybe not of overriding importance. It'd have some applications in discrete math, which is what computer scientists gravitate towards instead of high level calculus.