Sebastian Pancratz wrote : > The problem is here: > > > http://trac.sagemath.org/sage_trac/attachment/ticket/6441/trac_6441_b_df_charpoly_412rebase.patch > new lines 1084--1089 > > When I wrote the code for computing characteristic polynomials in a > division-free way in order for it to work over more general base > rings, it turned out that the computation of determinants via the > characteristic polynomial was a *lot* faster than the previous code. > Unfortunately, it seemed that in order to call the polynomial code, > one needed to supply a variable. In most cases this isn't a problem, > but in symbolic rings it might. I was hoping to get around this by > simple choosing "A0123456789" as a new variable. > It's your work, I do nothing, and I'll use it !
So I admire your work and don't criticize it. A variable name "inner_variable_in_minpoly" may be nicer : the name A0123456789 has no human sense, but "inner_variable...." explains were we can find this variable if a bug occures. It seems this variable is global and can't be a local symbolic variable. So the choice of its name feels important. F. -- 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
