Igor Schein on Fri, 11 Jan 2002 15:36:20 -0500

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Re: Galois closure & seg. fault questions

On Fri, Jan 11, 2002 at 03:26:23PM -0500, Jonathan P. Hanke wrote:
> Hi,
> I'd like to consider all of the conjugates of a number in a non-Galois
> number field.  Is there a way to find the polynomial for the Galois
> closure, and express the original number in this number field?

Use polcompositum() to compose the polynomial with itself, possibly more
than once, until you get a Galois closure.

> On a separate note, when GP declares a segmentation fault, and asks me to
> report it, what info should I send?

Usually the platform, the version of gp, the command that results in
SEGV, plus any special settings, like stack size or precision, if
different from defaults.