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- Path: sparky!uunet!pipex!doc.ic.ac.uk!uknet!glasgow!jack
- From: jack@dcs.glasgow.ac.uk (Jack Campin)
- Newsgroups: sci.math
- Subject: Re: Non-Standard Analysis and philosophy
- Message-ID: <C19rMF.7tI@dcs.glasgow.ac.uk>
- Date: 22 Jan 93 19:03:50 GMT
- References: <1993Jan21.180359.21766@ulrik.uio.no> <TORKEL.93Jan21204806@bast.sics.se> <1jn9hoINNgr7@usenet.INS.CWRU.Edu>
- Reply-To: jack@dcs.glasgow.ac.uk (Jack Campin)
- Organization: COMANDOS Project, Glesga Yoonie
- Lines: 17
-
- cxm7@po.CWRU.Edu (Colin Mclarty) wrote:
- >> Under which philosophies of mathematics is non-standard
- >> analysis possible, and to what extent?
- > Any philosophy of mathematics that allows the compactness theorem for first
- > order logic (and thus for axiomatized higher order logic) has an easy proof
- > that standard and non-standard analysis are equally possible.
-
- OK, so just what philosophies of mathematics *do* allow the compactness
- theorem? What is the constructive content of the prime ideal theorem?
- (I don't know of any constructive system that accepts it but not AC - is
- there one?)
-
- --
- -- Jack Campin room G092, Computing Science Department, Glasgow University,
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