home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!mcsun!uknet!zen.sys.uea.ac.uk!jrk
- From: jrk@sys.uea.ac.uk (Richard Kennaway)
- Newsgroups: soc.bi
- Subject: Graph theory (was Re: Appearances on and off the net)
- Message-ID: <jrk.727608217@zen.sys.uea.ac.uk>
- Date: 21 Jan 93 09:23:37 GMT
- References: <C10tJ8.HD0@demon.co.uk> <1993Jan19.121946.14730@infodev.cam.ac.uk> <1993Jan19.193606.16443@dcs.warwick.ac.uk> <1993Jan19.202419.2326@infodev.cam.ac.uk> <C15Kx0.79z@dcs.ed.ac.uk>
- Sender: news@sys.uea.ac.uk
- Organization: UEA School of Information Systems, Norwich, UK.
- Lines: 15
- Nntp-Posting-Host: zen.sys.uea.ac.uk
-
- In <C15Kx0.79z@dcs.ed.ac.uk> pdc@dcs.ed.ac.uk (Paul Crowley) writes:
- >>difficult to explain. The time to start getting worried is when
- >>you need line crossing or a non-planar medium to get it all on.
-
- >Yup, I've reached that stage. It needs either (a) a set of five people
- >who have all slept with each other, or (b) two sets of three people such
- >that all of one set have slept with all of the other.
-
- Not quite. The graph must have K5 or K3,3 as a minor, but not necessarily
- as a subgraph.
-
- -- ____
- Richard Kennaway \ _/__ School of Information Systems
- Internet: jrk@sys.uea.ac.uk \X / University of East Anglia
- uucp: ...mcsun!ukc!uea-sys!jrk \/ Norwich NR4 7TJ, U.K.
-