On Sat, Dec 03, 2011 at 01:22:32AM -0300, Federico Lebrón wrote:
> I've written a small pair of functions which could be useful:
> 
>       1) A function is_symmetric which, given a polynomial, returns whether 
> or not the polynomial is a symmetric polynomial.
>       2) A function symmetrize which, given a symmetric polynomial, returns 
> an equivalent expression in terms of the elementary symmetric polynomials.
> 
> The code, which likely needs some cleanup (and modifications to do things 
> "the Sage way", whatever it may be), is here: http://codepad.org/gJpNRfHH
> 
> Would there be interest in adding these to Sage perhaps? I tried searching 
> for similar functionality but couldn't find it.

Please have a look at SymmetricFunctions and
http://combinat.sagemath.org/doc/thematic_tutorials/demo-symmetric-functions.html

and get back to us for more information if needed!

Cheers,
                                Nicolas
--
Nicolas M. Thiéry "Isil" <nthi...@users.sf.net>
http://Nicolas.Thiery.name/

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