> < ^ Date: Mon, 10 Jul 2000 19:24:26 -0600
> ^ From: Nicolas Thiery <nthiery@icare.mines.edu >
> ^ Subject: Series expansions


I am developping a library for computing in invariant rings of
permutations groups. So far, I am using MuPAD for this, but I am
currently rewritting some parts in C++, and may as well use this
occasion to switch to Gap for the rest. I spent the afternoon browsing
through the manual, and it seems that about all the features I need
are available (plus plenty of new ones!).

I have a few questions regarding this:

- are there any benchmarks for comparing the speed of basic
manipulations of polynomials between MuPAD and Gap
- are there functions in gap to compute series expansions of rational
functions ?
- is the Polya enumeration implemented ? (Consider the action of a
permutation group on lists containing elements with given weights,
and compute the generating series of the orbits).

Thanks in advance,

Best regards,
Nicolas M. Thiéry "Isil", 412 Washington Avenue, 80403 Golden Colorado (USA)
Mél: nthiery@mines.edu, Tél: (303)273-5492, Fax: (303)273-3875
WWW: <URL:http://www.mines.edu/~nthiery/>

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