Le vendredi 11 août 2017 11:22:24 UTC+2, Eric Gourgoulhon a écrit : > > Hi, > > Le vendredi 11 août 2017 08:12:42 UTC+2, David Roe a écrit : >> >> Note that this is changed in https://trac.sagemath.org/ticket/23592 >> > > This is not the same part of manifolds code: #23592 > <https://trac.sagemath.org/ticket/23592> deals with comparison of points > (sage.manifolds.point.ManifoldPoint.__eq__), while the issue discussed here > is related to assignment of tensor components > (sage.tensor.modules.comp.CompWithSym.__setitem__). Since only nonzero > components are stored, the test > elif value == 0: > is performed in line 3263 of src/sage/tensor/modules/comp.py > Now, as pointed by Ralf and similarly to what has been done in #23592, one > could weaken this test to > elif value.is_trivial_zero(): > In this way, Maxima will not be called and, in addition to fixing the > above bug, one could expect a significant speed-up. > I am going to open a ticket on this. >
This is now https://trac.sagemath.org/ticket/23623 In particular, this fixes the code sample He(rij).sage provided by Richard. Eric. -- 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 https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
