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- From: gsmith@lauren.iwr.uni-heidelberg.de (Gene W. Smith)
- Newsgroups: sci.physics
- Subject: Re: Lowneheim-Skolem theorem (was: Continuos vs. discrete models)
- Message-ID: <1992Nov20.134839.4436@sun0.urz.uni-heidelberg.de>
- Date: 20 Nov 92 13:48:39 GMT
- References: <1992Nov17.124233.24312@oracorp.com> <1992Nov18.133219.6664@sei.cmu.edu>
- Sender: news@sun0.urz.uni-heidelberg.de (NetNews)
- Organization: IWR, University of Heidelberg, Germany
- Lines: 18
-
- In article <1992Nov18.133219.6664@sei.cmu.edu> firth@sei.cmu.edu
- (Robert Firth) writes:
-
-
- >Necessary, but not, I fear, sufficient. If you are to replace the
- >continuum with a *single* discrete manifold, then you must show that,
- >for any uncountable set with certain properties, there exists a
- >*single* countable set with all the same properties.
-
- What does countability have to do with continuity anyway? Suppose I
- define my manifolds over the recursive reals. These are dense, and so
- support continuous functions, but are also countable.
-
-
-
- --
- Gene Ward Smith/Brahms Gang/IWR/Ruprecht-Karls University
- gsmith@kalliope.iwr.uni-heidelberg.de
-