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- Newsgroups: sci.math
- Path: sparky!uunet!munnari.oz.au!news.hawaii.edu!tarski!ross
- From: ross@tarski.tmc.edu (David Ross)
- Subject: Re: nonstandard analysis
- Message-ID: <1992Dec17.220758.25679@news.Hawaii.Edu>
- Sender: root@news.Hawaii.Edu (News Service)
- Nntp-Posting-Host: tarski.math.hawaii.edu
- Organization: University of Hawaii Mathematics Department
- References: <1992Dec8.220841.16147@athena.mit.edu> <ByvFuC.AIs@acsu.buffalo.edu> <1g3lfiINNcmf@usenet.INS.CWRU.Edu> <Bz0Lyp.Mu7.1@cs.cmu.edu> <ARA.92Dec15153446@camelot.ai.mit.edu>
- Date: Thu, 17 Dec 1992 22:07:58 GMT
- Lines: 29
-
- In article <ARA.92Dec15153446@camelot.ai.mit.edu> ara@zurich.ai.mit.edu (Allan Adler) writes:
- >
- > I'm not entirely pleased that the
- >emphasis in recent postings seems to be on Nelson's foundations IST.
-
- IST seems to be more easily accessible to people with no background
- in logic or logic-like mathematics. I don't understand this myself, as
- IST is more syntactic in basis than is 'normal' nonstandard analysis.
-
- >
- >I looked at Nelson's book in the Annals of Math studies and
- >I found that he didn't take enough care to maintain a
- >distinction between standard mathematical objects and nonstandard ones.
-
- This is actually an important part of the ontology of work in IST; the
- idea is that there *is* no difference between standard and nonstandard
- entities, but rather a syntactic difference of what you can say about
- them. My friends who work in the IST framework act surprised if you
- suggest that the 'real' reals *don't* contain infinitesimals. I
- find this kind of strange, myself.
-
-
- - David
-
-
- --
- David Ross, Dept. of Math., Univ. of Hawaii at Manoa, Honolulu HI 96822
- Internet: ross@math.hawaii.edu -or- ross@tarski.math.hawaii.edu
- Phone: 808-956-9949
-