Hello,
On Mon, Jan 23, 2012 at 03:58:38AM -0800, Dima Pasechnik wrote:
> Given that Chevie needs Maple, it can be regarded as "highly optional".

I think that you are confused about Chevie.

There  was a 'Maple  part of Chevie'  written in 1995  which needs maple to
compute  Green functions  of reductive  groups. The  other parts  of Chevie
(such as braid groups) never needed Maple but only GAP3.

The 'maple part of Chevie' is now obsolete, computations of Green functions
are done in GAP3. Thus:

* Chevie is a purely open source package, needing only GAP3, and readily
* accessible from sage without installing Maple.

Is that clear? Perhaps you would learn some interesting things for you by
browsing the current Chevie manual:

    http://www.math.jussieu.fr/~jmichel/gap3/htm/index.htm

------------------------------------------------------------------------
Jean MICHEL, Equipe des groupes finis, Institut de Mathematiques UMR7586 
Bureau 9D17 tel.(33)157279144, 175, rue du Chevaleret 75013 Paris

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