On 19 April 2015 at 12:47, Vincent Delecroix <20100.delecr...@gmail.com> wrote: > Hello, > > I really do not like > > sage: M = MatrixSpace(QQ,3) > sage: G = SL(3, QQ) > sage: m1 = M(1) > sage: m2 = G(1) > sage: m1 > [1 0 0] > [0 1 0] > [0 0 1] > sage: m2 > [1 0 0] > [0 1 0] > [0 0 1] > sage: m1 == m2 > False > > Shouldn't it be True? One way would be to have a coerce embeddig from G to M > which looks natural to me. Is it? >
I agree that there should be coercion from a group of units (or a subgroup of that, as here) into a ring. But automatic? You can do A(G(1)) and G(A(1)) here, so manual coercion is possible. John > Best, > Vincent > > -- > 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/d/optout. -- 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/d/optout.
