Ouch, the Cartan matrix was broken for A,2n,2 (because the conversion
into BC n left 2n/2 as a rational number which broke the graph code!).
sage: C=CartanType(['A',4,2])
sage: C.cartan_matrix()
[ 2 -2 0]
[-1 2 -1]
[ 0 -1 2]
sage: C.cartan_matrix().rank()
3
sage
Hi Nicolas,
> I just fixed the Semigroupe package to work on 64 bits. Well, at least
> it passes all tests on massena :-) It was a really stupid issue in how
> I had written the 64 bits detection.
[...]
tomahawk-*mbinat/sage/libs $ sage -t semigroupe
sage -t "4.4.1/devel/sage-combinat/sag
On Tue, May 25, 2010 at 11:49:16AM -0700, John H Palmieri wrote:
> If I use another data structure, are there methods that I should make
> sure to implement for it to be a well-implemented
> (Graded)AlgebraWithBasis?
Some day, there will be an example, and the example will have exactly
that minima
Hi!
I just fixed the Semigroupe package to work on 64 bits. Well, at least
it passes all tests on massena :-) It was a really stupid issue in how
I had written the 64 bits detection.
There is an updated spkg on trac:
http://trac.sagemath.org/sage_trac/ticket/8360
And I have made a c
Hello,
I would appreciate very much if somebody could add the following thing
to the symmetric functions in sage. Mostly this is just a variant of
the omega function, which is implemented by transposition of
partitions in the schur basis. The point is that I just do not dare to
do it myself... Thi
Dear participants to the joint Sage-Combinat/Chevie workshop,
I am now working out the organization details for the soon to come
workshop in Orsay! The program will start in Orsay on Monday 14th
morning with a one hour intro to Sage & Sage-Combinat followed by one
our two hours of on computer
Dear Sage/Sage-Combinat devs,
Paul Zimmerman is coordinating the writeup of an open source French
introductory book on computational mathematics, in Sage, targeting
students from high school to graduate, as well as researchers. A first
version should be online in July or so. The current au
On Tue, May 25, 2010 at 05:56:26PM -0700, Anne Schilling wrote:
> I think you must have broken the code with your fix:
Oops, didn't I even run the tests???
Fixed.
> >>* The translation_factor in line 1244 of
> >>combinat/root_system/cartan_type.py is not
> >> yet implemented for type A_{2n}^{(
