Hey, I disagree; both go against OOP concepts and the Lie function too ambiguous to me (for instance, I would probably try Lie(ZZ['x']) and expect to get the Lie algebra of ZZ['x']).
Best, Travis On Friday, July 12, 2013 4:04:53 AM UTC+5:30, Eric Gourgoulhon wrote: > > > > Le jeudi 11 juillet 2013 21:26:43 UTC+2, mmarco a écrit : >> >> >> It looks very good. Just one remark: i think that the different functions >> you define (Lie, xdef...) should be methods better than external functions. >> In general, the use seems a bit confuding to me... i would say that it >> looks much more mathematica-like than pythonic. > > > Actually the functions Lie and xder are shortcuts to class methods: here > are their definitions: > > > def xder(form): > r""" > Exterior derivative of a differential form > """ > return form.exterior_der() > > > > def Lie(vector, tensor): > r""" > Lie derivative of a tensor field with respect to a vector field > """ > return tensor.lie_der(vector) > > We thought these shortcuts are more user friendly, being closer to the > standard mathematical notation. > -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/groups/opt_out.
