I encountered the following problem: s is the trivial submodule of quo, where quo is a quotient module of modular symbol subspace. The zero element b of quo should be an element of s, but sage says no when I do the following process:
# create modular symbol subspace sage: S = ModularSymbols(Gamma1(13),2).cuspidal_subspace() # create the quotient module sage: ker = S.module().subspace([0]) sage: quo=S.module()/ker # now we have the submodule of quo sage: s = quo.submodule([]) # we get zero of quo in the following way sage: a = (0,0,0,0,0,0,0,0,0,0,0,0,0,0,0) sage: aa=S.module()(a) sage: b=quo(aa) sage: b in s it gives FALSE Anybody has any idea where I am wrong? Thank you! -- 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. For more options, visit https://groups.google.com/d/optout.
