Comment #6 on issue 3052 by [email protected]: evaluating Abs should result in a positive number
http://code.google.com/p/sympy/issues/detail?id=3052
Could you open a new issue about the Heaviside thing? I think we should resolve that (I think perhaps it should raise a ValueError).
Getting back on topic, should this issue be closed as Invalid (see comment 1)?
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