> > The very purpose of the category framework it to declare in a > > mathematical > > way, this that have a matematical meaning. In the case of a right > > action of A > > on B, on declare that B is a A-RightModule. It is much more > > informative by all > > respect than testing if a random element of A accept to be > > multiplied by a > > random element of B. > > _rmul_ and _lmul_ are only tried if B is an A-module. (We don't (yet) > have the distinction between right and left modules, this is part of > where the "try it out" comes into play).
Thanks for this explanation... Should I understand that once we had the correct framework, these are supposed to disappear ? > However, not all actions are module actions, e.g. a permutation > acting on an ordered list, or a matrix acting on a quadratic form (to > take two examples that I've been thinking about lately). Permutations acting on lists is not a module structure but this may fits in a category of sets with a group acting on (G-set) no-linearity here. For acting on plain list, (i.e. data structure I would rather not use "*" do denote the operation). For matrix on quadratic form I don't see the problem. But maybe I'm not thinking about the same operation as you. Cheers, Florent --~--~---------~--~----~------------~-------~--~----~ 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 For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
