Hi Anne,
I have these functions in type C and I
can do type B and D too (I just have been
waiting on my student to do them). I haven't
looked too closely, but I think that they can
be done in a way that tweaks just one line.
Maybe Brant has already done them?
-Mike
On Fri, Aug 26, 2011 at 2:12 AM, Anne Schilling <a...@math.ucdavis.edu> wrote:
> Hi!
>
> A first implementation of the Core class is now available in the patch
>
> trac_11742-cores-as.patch
>
> on the sage-combinat server. Any comments or volunteers for review?
> (Could Mike and I be both authors and reviewers at the same time?)
>
> I have a question regarding one more detail: We implemented the bijection
> between k-bounded partitions and (k+1)-cores as the methods
> to_core in Partition and to_bounded_partition in Core.
> There is also a bijection with Grassmannian elements in the affine Weyl
> group
> for type A_k^{(1)}. There are methods from_kbounded_to_grassmannian in
> Partition
> and to_grassmannian in Core.
>
> Where shall we put the corresponding reverse maps from Grassmannian
> elements?
> Should they go into /combinat/root_system/weyl_group.py?
> This is, however, currently specific to type A and Grassmannian elements.
>
> Cheers,
>
> Anne
>
>
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