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- Path: sparky!uunet!elroy.jpl.nasa.gov!nntp-server.caltech.edu!allenk
- From: allenk@ugcs.caltech.edu (Allen Knutson)
- Newsgroups: sci.math
- Subject: Re: Non-Standard Analysis and philosophy
- Date: 22 Jan 1993 03:07:36 GMT
- Organization: California Institute of Technology, Pasadena
- Lines: 17
- Message-ID: <1jnodoINNmkj@gap.caltech.edu>
- References: <1993Jan21.180359.21766@ulrik.uio.no> <TORKEL.93Jan21204806@bast.sics.se> <1993Jan21.203027.27202@ulrik.uio.no>
- NNTP-Posting-Host: torment.ugcs.caltech.edu
-
- solan@smaug.uio.no (Svein Olav G. Nyberg) argues with Torkel Franzen:
-
- >|> >Under which philosophies of mathematics is non-standard
- >|> >analysis possible, and to what extent?
- >|> Your question makes no apparent sense. Non-standard analysis is simply a
- >|> field of mathematics that exists, hence is possible.
- >I am serious, Torkel. Surely finitist mathematicians will not
- >allow for infinitely large integers.
-
- In Robert's _Nonstandard Analysis_, he makes heavy use of *illimited*,
- but *finite*, integers. I forget what illimited means, but finite has
- the usual meaning - an endo-injection is a surjection.
-
- To the other people responding to this thread: don't you need some large
- cardinal axiom to prove the kosherness of nonstandard analysis? I could
- be misremembering. Allen K.
-
-