Updates:
Status: Accepted
Labels: -Priority-Medium -PassedReview Priority-Critical
NeedsBetterPatch
Comment #4 on issue 2141 by asmeurer: improve simplifications by dummy
substitution in secondquant
http://code.google.com/p/sympy/issues/detail?id=2141
There is a doctest failure in master now:
_______________________ sympy.physics.secondquant.wicks
________________________
File "/Users/aaronmeurer/Documents/Python/sympy/sympy-scratch/sympy/physics/secondquant.py",
line
2835, in sympy.physics.secondquant.wicks
Failed example:
wicks(F(p)*(F(q)+F(r)))
Expected:
NO(AnnihilateFermion(p)*AnnihilateFermion(q)) +
NO(AnnihilateFermion(p)*AnnihilateFermion(r))
Got:
-NO(AnnihilateFermion(q)*AnnihilateFermion(p)) -
NO(AnnihilateFermion(r)*AnnihilateFermion(p))
I know absolutely nothing about any of this. Are these expressions
equivalent and so this can be just updated, or is there a bug? I bisected
it down to a648c2120bc339e2d786deb0a94497fca456a6ab.
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