Differences between revisions 6 and 7

*-combinat Days Project Idea Page

Implement a generic FactoredElement class

PEOPLE: Burcin Erocal

In many combinatorics applications we work with rational functions whose numerator/denominator factor into nice components where the factorization is also known beforehand. The current representation of rational functions in Sage use the expanded form of the numerator and denominator. The goal is to implement a generic wrapper to store elements in a factored representation.
sage-devel thread about working with factored denominators
another thread
code mentined above is here

PEOPLE: Franco Saliola

This should be a nice exercise in adding a new basis (the seminormal basis) to an algebra (the group algebra of the symmetric group). We don't even have to introduce any new code to construct the basis since it already exists in Sage, thanks to Mike Hansen. On the other hand, I do have a better implementation based on a method that Alain Lascoux explained to me, so we could use that instead.

PEOPLE Nicolas Thiéry

PEOPLE: Franco Saliola

There are bugs in Sage that need fixin':
1. Bugs in Partitions
2. The wiki page quirks and weirdness in sage-combinat contains a list of quirks and weirdness in sage-combinat.
3. The sage-combinat milestone lists all tickets labelled sage-combinat.

And application to parabolic subroot-systems

PEOPLE: <list of interested participants>

-  ⇤ ← Revision 6 as of 2009-07-22 12:30:08 → 
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+   ← Revision 7 as of 2009-07-22 12:34:04 → ⇥
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+== Quickref card for sage.combinat ==

JasonBandlow, FrancoSaliola, NicolasThiéry

== Refactoring of symmetric functions ==

JasonBandlow