> > > I think you are overly focused on trying to define a derivative that > > reduces to the conventional derivative of non-analytic functions over > > the reals. > > I've just been casually following this conversation, but I think it's > important that the derivative of abs(x) be sign(x) not 2*sign(x) or > 1/2*sign(x). > > If you use a different function, like f.wirtinger_derivative(), then > it doesn't matter so much. > David > > +1
That notwithstanding, this conversation is really great to see and I hope we get something that works for the usual cases in the original post too! -- 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/d/optout.
