On Mon, Feb 13, 2012 at 07:46:31PM +0100, Jean MICHEL wrote:
> -A naive (in the sense of straightforward) port of the needed parts of (a
> rather old version of) Chevie to plain Python. I do not know if much of it
> is easily usable for a Sage port.
It should be trivial to import. It might need
> I tried to do some computations with the existing Iwahori-Hecke
> algebra module inside sage earlier this year. I needed to work over
> the rational function field C(x), for an indeterminate x. In the end I
> gave up and went back to using some gap3 code that I have, which
> builds on chevie, bec
I tried to do some computations with the existing Iwahori-Hecke
algebra module inside sage earlier this year. I needed to work over
the rational function field C(x), for an indeterminate x. In the end I
gave up and went back to using some gap3 code that I have, which
builds on chevie, because it wa
On Tue, Feb 14, 2012 at 02:05:21PM -0800, Anne Schilling wrote:
> No. It is really a different poset, see:
> ...
> which returns the original poset. But to_poset gives Q from the above
> computation.
Ok; out of curiosity, why do you need the relabelled poset for?
> > The elements of L would simp
Hi!
>> class LinearExtensionOfPoset(CombinatorialObject, Element):
>> ...
>
> We want to deprecate CombinatorialObject as soon as possible. If at
> all possible, please use ClonableArray (if not ClonableIntArray). See:
>
> sage: sage.structure.list_clone?
>
> Here, the ``def check(sel
Hi!
> Yes, this option seems the most natural to me and I have implemented this now!
Cool!
> As element class, I implemented
>
> class LinearExtensionOfPoset(CombinatorialObject, Element):
> ...
We want to deprecate CombinatorialObject as soon as possible. If at
all possible, pleas
> Thanks for the clarification. Let me restate it to check I am having
> it right. You have a poset, say:
>
> sage: P = Poset((divisors(30), attrcall("divides")))
>
> and then you want to manipulate a bunch of linear extensions of that
> poset like::
>
> sage: l1 = [1, 5, 3, 2, 10, 6, 15
