From: Anders Kock <kock@imf.au.dk>
To: categories@mta.ca
Subject: preprint available
Date: Thu, 10 Dec 2009 13:14:31 +0100 [thread overview]
Message-ID: <E1NIj0q-0006NT-DL@mailserv.mta.ca> (raw)
My manuscript "Abstract Projective Lines" is available at arXiv,
http://arxiv.org/abs/0912.0822
Abstract:
We describe a notion of (abstract) projective line over a field as
a set equipped with a certain first order structure, and a projectivity
between projective lines as a bijection preserving this structure.
The structure in question is that of a groupoid, with certain
properties. This leads to a natural notion of bundle of projective
lines, forming a stack.
Anders Kock
[For admin and other information see: http://www.mta.ca/~cat-dist/ ]
next reply other threads:[~2009-12-10 12:14 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-10 12:14 Anders Kock [this message]
-- strict thread matches above, loose matches on Subject: below --
2014-02-05 16:05 claudio pisani
2013-10-22 8:03 Preprint available Anders Kock
2010-03-29 15:44 preprint available Anders Kock
2009-04-29 14:59 JONATHON FUNK
2008-11-03 5:54 zackluo
2007-05-31 7:16 Anders Kock
1999-10-12 13:18 kock
1998-12-14 22:51 Preprint available F W Lawvere
1998-11-18 16:09 preprint available Martin Escardo
1998-11-12 14:26 Preprint available Marco Grandis
1998-06-24 14:49 preprint available Susan Niefield
1998-05-06 22:15 Steve Awodey
1997-09-02 12:19 categories
1997-07-30 16:39 Preprint available categories
1997-07-01 18:12 categories
1997-04-24 18:24 preprint available categories
1997-04-10 19:34 Preprint available categories
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