Status: Accepted
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 2829 by [email protected]: secondquant argument ordering
http://code.google.com/p/sympy/issues/detail?id=2829
In secondquant there are some places where a test like `if i < j` is
employed but it's not clear if lexical ordering was intended or whether a
value ordering was intended. Note that an unevaluated bool may be True or
False even though the exact values are not known:
bool(i<j)
True
bool(i<a)
False
Note how this plays out in KroneckerDelta:
KroneckerDelta(i,j)
KroneckerDelta(i,j)
KroneckerDelta(i,a)
KroneckerDelta(a,i)
(the i and a are now reversed -- was this intended?)
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