On Wed, Feb 16, 2011 at 7:06 PM, mmarco <mma...@unizar.es> wrote: > I already new all that, but my question would be: "why > S.has_coerce_map_from(R) returns False?"
Because S(r) is doing a "converion" rather than a "coercion". Coercion is implicit and happens when doing arithmetic. S.has_convert_map_from(R) should return True. --Mike -- 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