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Newsgroups: sci.math
From: Timothy Murphy <gayle...@eircom.net>
Date: Sat, 17 May 2008 12:05:23 +0100
Local: Sat, May 17 2008 7:05 am
Subject: Re: curves on quadrics
Dmitry Sustretov wrote: You're quite right, of course. > On May 16, 4:16 pm, Timothy Murphy <gayle...@eircom.net> wrote: >> Dmitry Sustretov wrote: >> > is there a projective quadratic surface that contains two non- >> > intrersecting curves? >> Suppose you take the surface x^2 - y^2 + z^2 - t^2 = 0. > The loci of these equations are points, not lines. I should have said something like x = y, z = t and x = -y, z = -t. Basically, I was thinking of a ruled surface, You must Sign in before you can post messages.
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