Status: Accepted
Owner: asmeurer
Labels: Type-Enhancement Priority-Medium
New issue 2206 by asmeurer: plus-minus object
http://code.google.com/p/sympy/issues/detail?id=2206
Do others think this would be useful?
I think we should have an object that represents plus-minus (±), and
another to represent minus-plus (∓) .
They would probably be called pm and mp or something. The behavior would be
a = pm*x
a
±⋅x
-a
∓⋅x
There are many cases where you want to keep track of two expressions that
differ only by a plus/minus sign somewhere in the expression (like
conjugates or something), and I think an object like this would be useful.
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