home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!pipex!warwick!uknet!pavo.csi.cam.ac.uk!camcus!gjm11
- From: gjm11@cus.cam.ac.uk (G.J. McCaughan)
- Newsgroups: sci.math
- Subject: Re: definition of topological space
- Message-ID: <1992Nov9.020743.18218@infodev.cam.ac.uk>
- Date: 9 Nov 92 02:07:43 GMT
- References: <1992Nov5.033835.5180@leland.Stanford.EDU> <1992Nov5.203738.840@athena.mit.edu> <1992Nov6.035352.26163@infodev.cam.ac.uk> <1992Nov8.211002.20516@massey.ac.nz>
- Sender: news@infodev.cam.ac.uk (USENET news)
- Organization: U of Cambridge, England
- Lines: 14
- Nntp-Posting-Host: apus.cus.cam.ac.uk
-
- In article <1992Nov8.211002.20516@massey.ac.nz>, news@massey.ac.nz (USENET News System) writes:
-
- > Not quite, you need
- >
- > 4. Any nbhd N of x contains another nbhd M of x which is a nhbd of
- > each of its points.
-
- Oh dear. And someone else pointed out that I forgot to specify that each
- point has at least one neighbourhood. Why do I never engage my brain before
- posting to sci.math?
-
- --
- Gareth McCaughan Dept. of Pure Mathematics & Mathematical Statistics,
- gjm11@cus.cam.ac.uk Cambridge University, England. [Research student]
-