Comment #5 on issue 2430 by [email protected]: Expression Countable Set
http://code.google.com/p/sympy/issues/detail?id=2430
Cool. We may need to change the names, as they conflict with single letter
names that we already have. I think it would be best to just use ZZ, NN,
etc. We'll need to either change the names of the poly domains or add some
magic to Poly to make these work like domains. I'm not sure what the
cleanest way to do that is.
Why is N._inf == -oo and N._sup == 0?
So you are using the definition of natural numbers that includes 0? Either
way is fine, but it needs to be documented. Also, if this is indeed the
case, than your definition of harmonics is wrong.
By the way, do you think these set related issues should go under the logic
label, or should I create a new label for sets?
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