At 0-th level the elements of the matrix should be in a ring, e.g. ``ZZ``, so it should not be necessary to cast them; for instance in ``mulrowcol`` ``result += K(row[i])*K(col[i])`` is much slower than ``result += row[i]*col[i]``
-- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at http://groups.google.com/group/sympy. For more options, visit https://groups.google.com/groups/opt_out.