On Thu, Mar 20, 2014 at 1:29 PM, Stefan Krastanov <[email protected]> wrote: > @Matthew, in general I would agree, but the algorithms for translating > "Lagrangian -> Feynman rules" or "Feynman rules + initial and final > state -> differential cross section" are already both 1) non trivial > and 2) domain specific. Abstracting this away might not be worth it as > it is not really used anywhere else. > > (but where it is used, it is used a lot. There is an entire standard > around it (UFO model files and Les Houches dump files as described in > the FeynRules and MadGraph projects))
Exactly. It would be good to have this in sympy. This would stress various symbolic features a lot, and I think it would also be used a lot. > > Exception: It might be useful in calculating correlations of some > multivariate functions through series expansions. That might we worth > investigating somewhat more. Ondrej -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CADDwiVD81S98mGQyuU3%2B9EO_m14so3kA0JSm4i2e%3D7Vy%2BNNKMQ%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
