Hello, If you have time, please have a look at
http://ask.sagemath.org/question/3157/group-algebramatrix-space-homomorphism It seems impossible to define a morphism of group between a symmetric group and a matrix group (and similarly at the level of algebras). Best Vincent -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-combinat-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-combinat-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-combinat-devel. For more options, visit https://groups.google.com/groups/opt_out.