Hi there, I'm close to solve: #8276 Make the one(), identity_matrix() and zero_matrix() cached and immutable. Correcting MatrixSpace is easy, however there are a lot of place in sage where people create a matrix from the one or zero and modify it after that. I nearly corrected all these occurences However I'm stuck with those three files which are very complicated and depend one of each other: sage/modular/quatalg/brandt.py sage/algebras/quatalg/quaternion_algebra.py sage/schemes/elliptic_curves/heegner.py There are a lot of error but I can't find where it's coming from. I really could use the help of a specialist. The patch are on http://trac.sagemath.org/sage_trac/ticket/8276 Apply them it the following order: trac_8276-MatrixSpace_one-fh.patch trac_8276-fix_sagelib-fh.patch Thanks for any suggestion.
Cheers, Florent -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org