On Thu, Dec 09, 2010 at 09:05:03PM +0100, Nicolas M. Thiery wrote: > Hi Paul, > > On Wed, Dec 08, 2010 at 09:04:50AM +1100, Paul Bryan wrote: > > I'm wondering if the best way to implement multi-symmetric functions > > is as I've done so far, using SymmetricFunctionAlgebra as a model, > > which means my MultiSymmetricFunctionAlgebra class extends > > CombinatorialFreeModule in the category of GradedHopfAlgebrasWithBasis > > or should I use the CombinatorialAlgebra class? Is there a reason why > > SymmetricFunctionAlgebra doesn't extend CombinatorialAlgebra? Is it > > historical, or for efficiency, or something else? > > sage: CombinatorialAlgebra? > Deprecated! Don't use! > > Granted it's not very explicit :-)
It's not mentioned on the reference page. I haven't looked at the code, perhaps it's mentioned there? > Here is more detail about the story: CombinatorialAlgebra is an > ancient rest from when Sage did not yet have categories. It's still > used in a couple places that have not yet been refactored. > CombinatorialFreeModule in the category of GradedHopfAlgebrasWithBasis > is the right way to go! On the inheritance side you specify the data > structure for the elements (CombinatorialFreeModule); on the category > side you state the mathematical properties of the algebra (a graded > hopf algebra). > Excellent. I've done the right thing! Cheers, Paul. > Cheers, > Nicolas > -- > Nicolas M. Thiéry "Isil" <nthi...@users.sf.net> > http://Nicolas.Thiery.name/ > > -- > You received this message because you are subscribed to the Google Groups > "sage-combinat-devel" group. > To post to this group, send email to sage-combinat-de...@googlegroups.com. > To unsubscribe from this group, send email to > sage-combinat-devel+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/sage-combinat-devel?hl=en. > -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-de...@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
