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Kevin Ryde on Mon, 21 Sep 2015 11:18:41 +0200
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- To: pari-users@pari.math.u-bordeaux.fr
- Subject: Re: discriminant of quad
- From: Kevin Ryde <user42_kevin@yahoo.com.au>
- Date: Mon, 21 Sep 2015 19:13:26 +1000
- Delivery-date: Mon, 21 Sep 2015 11:18:41 +0200
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- In-reply-to: <103B7DAC-6CAA-487B-9F76-CFB44E1DB9CD@earthlink.net> (Kurt Foster's message of "Sun, 20 Sep 2015 09:41:09 -0600")
- References: <87pp1dqpb3.fsf@blah.blah> <103B7DAC-6CAA-487B-9F76-CFB44E1DB9CD@earthlink.net>
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Kurt Foster <drsardonicus@earthlink.net> writes:
>
> ? n.pol
> %4 = x^2 + 3
Ah, I see that's the poly of the quad basis, so not the same as
charpoly().
Karim Belabas <Karim.Belabas@math.u-bordeaux.fr> writes:
>
> But I see none of these two are documented, I'll fix that.
Perhaps a couple of words in the quadratic numbers introduction (the GP
bit) where discriminants are described. Could have a brief
cross-reference under quadgen() too as that could show up in the help
system rather than reading the whole.