Status: Valid
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 4018 by [email protected]: Equality arithmetic is wrong: Eq(x,0)+2
-> Eq(x+2,0)
http://code.google.com/p/sympy/issues/detail?id=4018
I thought that arithmetic involving Equality would fail but it gives an
incorrect result instead:
Eq(x,0)+2
x + 2 == 0
It seems to me that at worst it should fail and at best it should give
Eq(x+2,0+2)
Operations involving two equalities is kind of strange, too. e.g.
Eq(x,2)/Eq(x,3) -> x==2(x==3)**-1. In that case, again, at worst I would
like to see it fail or make it the convention that the lhs combines and the
rhs combines to give x/x==2/3 -> False
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