On 2013-11-07, Volker Braun <vbraun.n...@gmail.com> wrote: > On Thursday, November 7, 2013 5:55:04 AM UTC-8, Nathann Cohen wrote: >> >> sage: G = AdditiveAbelianGroup([7,23]); G >> Additive abelian group isomorphic to Z/161 >> > sage: G(1) >> TypeError: can't initialize vector from nonzero non-list >> > > This expects input from Z/161, so a length-one list: > > sage: G([160]) + G([1]) > (0, 0) > > If you insist on thinking of it as Z/7 + Z/23 then use linear combinations > of generators: > > sage: 7 * G.gen(0) > (0, 0) you can also do sage: 7*G(vector([1,0])) (0, 0)
which is perhaps more convenient to manipulate non-interactively, e.g. you can write G(vector([3,4])) instead of 3*G.gen(0)+4*G.gen(1): sage: G(vector([3,4]))==3*G.gen(0)+4*G.gen(1) True > > -- 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.
