[GAP Forum] Solving Cubic and Quartic Equations in GAP

[MCKAY john]

What does the answer below mean???

"if at all possible" - for 3-ics and 4-ics it is ALWAYS possible.

has the answerer provided an expression in radicals for ALL solvable
polynomial in Z[x]?

If so, then let's hear about it.

It is a scandal that no-one to date has done this in symbolic computation.

John Mckay

On
Wed, 8
Jun 2005, Andreas Distler
wrote:

> Dear GAP Forum,
>
> > 	I was wondering whether GAP can solve cubic and quartic
> > equations (in one variable) over the complex numbers.
>
> As far as I know, real and complex numbers are not supported by GAP.
> For rational polynomials I have implemented a package containing a function to
> express the roots of the polynomial by radicals if this is possible. You can
> find the package under
> http://www.icm.tu-bs.de/ag_algebra/software/distler/radiroot/
>
> Best wishes,
> Andreas Distler
>
> _______________________________________________
> Forum mailing list
> Forum at mail.gap-system.org
> http://mail.gap-system.org/mailman/listinfo/forum
>

-- 
But leave the wise to wrangle, and with me
the quarrel of the universe let be;
and, in some corner of the hubbub couched,
make game of that which makes as much of thee.