On Mon, Jan 18, 2010 at 10:40:18AM +0100, Nicolas M. Thiery wrote:
> I also added a list of core features I really would like to see in
> Sage, or at least in Sage-Combinat, before Sage Days 20 (Feb. 22nd),
> since they will be building blocks for the work planned there.
> Here is a copy:
>
> * Merge #7921 in Sage 4.2.2: Categories for extension types via
> __getattr___(Robert, Nicolas, Florent)
> * Rebase, finalize and merge #7004: Refactor the graph layout code, and add
> interface with graphviz for acyclic layout
> (Robert Beezer? Nathann Cohen?)
> ...
I forgot in the list:
* #6588: Categorification of root systems (???)
Make Root and WeightLatticeRealization into categories
Declare the various embeddings as coercion/conversions
Define and use an overloaded operator for the scalar product (depends on (7))
There is a preliminary patch in our queue
It's better to do that before building further on root systems, Hecke
algebras and the like with the Chevie people.
Cheers,
Nicolas
--
Nicolas M. Thiéry "Isil" <nthi...@users.sf.net>
http://Nicolas.Thiery.name/
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