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- Path: sparky!uunet!spool.mu.edu!mixcom.com!ttyytt
- From: ttyytt@mixcom.com (Adam Costello)
- Newsgroups: sci.math
- Subject: Re: You know, the integers (was: Re: Stupid question about FLT)
- Message-ID: <1992Jul23.045900.11889@mixcom.com>
- Date: 23 Jul 92 04:59:00 GMT
- Article-I.D.: mixcom.1992Jul23.045900.11889
- References: <22326.Jul2014.40.3392@virtualnews.nyu.edu> <1992Jul20.173716.6310@galois.mit.edu> <1992Jul23.042250.10738@mixcom.com>
- Organization: Milwaukee Internet Xchange BBS, Milwaukee, WI U.S.A.
- Lines: 17
-
- In article <1992Jul23.042250.10738@mixcom.com> ttyytt@mixcom.com (Adam Costello) writes:
- >
- >I'm sorry if I begin to sound like a broken record, but please remember
- >that this is only true if you restrict your axioms to first-order
- >languages. The REAL integers _can_ be defined (to within isomorphism)
- >in a second-order language. Of course, this still doesn't get you a
- >complete number theory. Also, using a second-order language requires
- >that one already knows what sets are. If these still have to be defined,
- >then we're back to the same problem. It's inescapable. Set theory is
- >built on logic, but logic is defined in terms of sets. People obviously
- >knew and understood both concepts well, before either was formalized.
-
- Oops, I didn't realize when I posted this that it had already been
- covered quite well (much better than I have done). Unfortunately, rn
- is confused and wouldn't let me cancel it. Sorry.
-
- AMC
-