On Wed, Aug 26, 2009 at 08:09:15AM -0700, Anne Schilling wrote:
> sage: DynkinDiagram(["E",7]).edges()
>
> [(1, 3, 1), (2, 4, 1), (3, 1, 1), (3, 4, 1), (4, 2, 1), (4, 3, 1),
> (4, 5, 1), (5, 4, 1), (5, 6, 1), (6, 5, 1), (6, 7, 1), (7, 6, 1)]
> sage: DynkinDiagram(["E",7,1]).edges()
>
> [(0, 1, 1), (1, 0, 1), (1, 3, 1), (2, 4, 1), (3, 1, 1), (3, 4, 1),
> (4, 2, 1), (4, 3, 1), (4, 5, 1), (5, 4, 1), (5, 6, 1), (6, 5, 1),
> (6, 7, 1), (7, 6, 1)]
>
> So I suppose even in the finite Dynkin diagram 2 is attached to 4, is this
> right?
Yes. So you can safely do your computations. It's only the printout
that is broken.
> Ok, the offset is probably from e-mail, but I am using the command
> line and in the picture 2 is attached to 5 in the finite Dynkin
> diagram, but to 4 in the affine Dynkin diagram.
Ok.
> > Also, please run the tests on cartan_type.py and type_E.py.
Ok, something is going really wrong with the sage-combinat install on
your machine (and Brant's). Those tests break horribly, whereas on my
machine they 100% pass with Sage 4.1 and 4.1.1 and all sage-combinat
patches applied. I can only guess that the update went somehow wrong.
Could you try with 4.1.1?
On your 4.1 install, could you qpop -a, qpush -a, sage -b and try
again?
Cheers,
Nicolas
PS: Sorry for the slow answers; I don't yet have internet access at
home, and I am spending quite some time there with Albane setting back
everything before the girls come for school.
--
Nicolas M. Thiéry "Isil" <nthi...@users.sf.net>
http://Nicolas.Thiery.name/
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