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- Newsgroups: sci.math
- Path: sparky!uunet!secapl!Cookie!frank
- From: frank@Cookie.secapl.com (Frank Adams)
- Subject: Re: Fundamental Theorem of Geometry (and others)
- Message-ID: <1992Aug17.184328.44369@Cookie.secapl.com>
- Date: Mon, 17 Aug 1992 18:43:28 GMT
- References: <1992Aug4.135650.147@csc.canterbury.ac.nz> <1992Aug4.183519.2276@u.washington.edu> <1992Aug5.001654.27795@informix.com>
- Organization: Security APL, Inc.
- Keywords: fundamental theorem
- Lines: 28
-
- In article <1992Aug5.001654.27795@informix.com> proberts@informix.com (Paul Roberts) writes:
- >In article <1992Aug4.183519.2276@u.washington.edu> petry@frobenius.math.washington.edu (David Petry) writes:
- >>In article <1992Aug4.135650.147@csc.canterbury.ac.nz> wft@math.canterbury.ac.nz (Bill Taylor) writes:
- >>> ..... and for the big daddy of them all, what is the
- >>>
- >>> FUNDAMENTAL THEOREM OF MATHEMATICS ??
- >>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- >>
- >>My vote goes to the principle of induction.
- >
- >But is it a theorem; can it be proved? Or is it not rather an
- >axiom about, you know, the integers ....
-
- It all depends. In pure number theory, it's an axiom. In set theory, it's
- a theorem.
-
- Really, the difference between theorems and axioms is not so fundamental.
- If you take a different set of axioms for, say, fields , with the same
- consequences, you still have the same theory. Even a slightly different
- theory is not really significant: if you skip the axiom 0 != 1 in field
- theory, you have the theory of "fields plus the trivial ring". A few
- theorems and definitions become slightly easier to state, and a few become
- slightly harder; but that's all.
-
- "Foundations" are embellishments, not the essence.
-
- (BTW, if there is a "Fundamental Theorem of Mathematics", I think induction
- has got to be it.)
-