*-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

An example of adding a new basis to an algebra

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.

Try out Nathann Cohen new interface to Mixed Integer Linear Programming software

PEOPLE Nicolas Thiéry

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PEOPLE: <list of interested participants>

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