PS: On 2015-06-15, 'Martin R' via sage-devel <[email protected]> wrote: > I am probably clueless, but I thought that David's explanation was > plausible: the attribute _codomain of Map is declared to be of type Parent > (in map.pxd), so if C is not of type Parent, we are calling for trouble.
I am a bit puzzled, because I think I have changed it to CategoryObject a couple of years ago (either for Map or for Morphism), since after all not all objects are in fact sets (i.e., parents). Best regards, Simon -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
