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- From: mccolm@darwin.math.usf.edu. (Gregory McColm)
- Newsgroups: sci.math
- Subject: Re: nonstandard analysis
- Message-ID: <1992Dec9.200722.9836@ariel.ec.usf.edu>
- Date: 9 Dec 92 20:07:22 GMT
- References: <ByvFuC.AIs@acsu.buffalo.edu>
- Sender: news@ariel.ec.usf.edu (News Admin)
- Organization: Univ. of South Florida, Math Department
- Lines: 22
-
- In article <ByvFuC.AIs@acsu.buffalo.edu> v104n55k@ubvmsd.cc.buffalo.edu (David I Schwartz) writes:
- >After the past couple of posts, I must ask:
- >what is nonstandard analysis? Is there a decent reference that deals with it?
-
- Nonstandard analysis is essentially a refurbished version of
- Liebniz's infinitesimal calculus. Liebniz tried to make sense
- of the calculus by having dy and dx being infinitely small
- positive numbers. This approach was abandoned after limits
- appeared, but was revived around 1950 by Abraham Robinson, who
- came up with a rigorous formulation. Since there are no limits,
- some people thought it would be a great idea to teach freshman
- calculus this way (see M. Henle's INFINITESIMAL CALCULUS for
- an example). Also, some applications to dynamics have been
- found. There is an article on the stuff in Barwise's HANDBOOK
- OF MATHEMATICAL LOGIC.
-
- -----Greg McColm
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