While the ring type hierarchy does not reflect that polynomials are power series, you can have a power series without bigoh which is pratically a polynomial but, being a power series, has much less member functions available.
I think Sage shouldn't allow a zero bigoh term in power series. It should avoid unexpected behaviour, eg. users complaining that a polynomial isn't what it seems. But I'm writing here to ask for your opinion before I think about patching, because I'm only beginning to understand Sage, and I'm not even a mathematician! Regards, Ralf Stephan -- 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 http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/groups/opt_out.
