On Fri, Aug 26, 2011 at 07:28:14AM -0700, Anne Schilling wrote:
> Great! I suppose in type C you would go to symmetric cores
> (as in my paper with Thomas and Mark). Where should the
> inverse function go, that is, the function from symmetric
> cores to affine Grassmannian elements in type C? Also in the
> Core class? But then the function would have to take another
> argument, namely the type and do some checking (that the core is
> symmetric etc).
> 
> We can ask Brant and Steve! I agree they are not difficult
> to implement, I am just wondering where precisely to put them
> in sage.

I guess I would just put them in FiniteWeylGroups, with an

   assert self.is_grassmanian(side=...)

and, for the time being, a test on the type. If we start having them
for many types and it gets too clumsy, we can do later as we did for
stanley symmetric functions.

Will the cores for all types use the same Core class?

Cheers,
                                Nicolas
--
Nicolas M. ThiƩry "Isil" <nthi...@users.sf.net>
http://Nicolas.Thiery.name/

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