On 4 October 2012 00:57, Maarten Derickx <m.derickx.stud...@gmail.com> wrote: > The reason is that q_expansion_basis returns power series and not modular > forms:
Yes, I know, but in practice one often wants to know if a given power series is the q-expansion of an element of the space, and it seems strange to me that you can do this by the ugly method of calling "M(v)" and testing whether it raises an error, but you can't just use "in". Maybe it's a matter of taste. David -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To post to this group, send email to sage-devel@googlegroups.com. To unsubscribe from this group, send email to sage-devel+unsubscr...@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel?hl=en.