On Wed, Jul 8, 2009 at 6:52 PM, Simon King<simon.k...@uni-jena.de> wrote:
>
> Dear Sage-Devel,
>
> I'd like to announce our Sage package for the computation of
> cohomology rings with coefficients in GF(p) for finite p-groups.
>
> The trac ticket is at http://trac.sagemath.org/sage_trac/ticket/6491
> and the documentation at 
> http://sage.math.washington.edu/home/SimonKing/Cohomology/

I added the spkg to experimental right off, so people can just do

   sage -i p_group_cohomology-1.0

It would be very useful if you could post on the ticket *PRECISELY*
what you think a person should do to referee it and sign off on it
being officially added to the optional package repo.
I.e.,

  1. Install on the following hardware/OS combos as follows.

  2. Run the following commands (and here is what should happen).

  3. Look in the spkg and read the following, checking for ...:

Whether or not the referee will agree that this is enough testing is
up to them.   However, it will be tremendously helpful to get them
going.

> Let me draw your attention to the fact that with this package we were
> able to compute the cohomology rings for all groups of order 128 and
> for all but six groups of order 243. These data are available on
> sage.math, and the package is able to download them. The result for
> the groups of order 64 are included in the package.
>
> Note that these computations for order 128 and 243 seemed to be far
> beyond the realm of possibilities. As much as I know, Sage is
> currently the only CAS that can do those things (only with the
> package, of course....).
>
> Since it depends on the SmallGroups library being installed, the
> package can only be an optional package. Actually I don't know the
> inclusion procedure for new packages, but I am sure you will tell
> me...
>
> Cheers,
>    Simon
>
> >
>



-- 
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org

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