> > > However, the interesting part for me is the commutative subalgebra of even > mixed forms which I could certainly implement. But I am not sure whether > this will work due to the error message above... >
The error message indicates what you need to do: implement an is_field() method that returns False. Best, Travis -- 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 sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-devel/8ca550d5-5b8f-47c2-ab0e-a8104854afb5%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.