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- Xref: sparky sci.math:16776 misc.education:5175
- Newsgroups: sci.math,misc.education
- Path: sparky!uunet!psinntp!cadkey!dennis
- From: dennis@cadkey.com (Dennis Paul Himes)
- Subject: Re: The Continuum Hypothesis: Must it be {True or False}, or Not?
- Message-ID: <1992Dec11.162239.8548@cadkey.com>
- Organization: cadkey
- References: <1992Dec9.183849.13004@nas.nasa.gov>
- Distribution: usa
- Date: Fri, 11 Dec 1992 16:22:39 GMT
- Lines: 37
-
- In article <1992Dec9.183849.13004@nas.nasa.gov> asimov@wk223.nas.nasa.gov (Daniel A. Asimov) writes:
- >Among those of you who are familiar with the statement of the
- >Continuum Hypothesis, and the fact that it was proved to be
- >independent of ZF + AC, I would like to know:
- >
- >Do you see the Truth or Falsity of the Continuum Hypothesis as
- >being exclusively dependent on a whether it can be proved or
- >disproved in some specific axiom system?
- >
- >Or rather, do you see the Continuum Hypothesis as being
- >{True or False}, in some sense independent of whether or
- >not it is decidable in any given axiom system?
- >
-
- Truth is a relative term, although it is usually treated as absolute,
- since when discussing the nature of reality it is relative to the universe.
- When discussing mathematical hypotheses, however, it is relative to the
- theory (axiom system) at hand. We often speak of mathematical hypotheses as
- being true or false as if those were absolute terms, but that is really a
- shortcut used when the theory at hand is obvious (or when the hypothesis is
- true in any of the more popular theories).
- On the other hand, theories become popular because they have models
- which are useful in describing the universe. Natural numbers and real
- numbers are studied so extensively because they are useful when analysing
- groups of objects and distances, among other things. So it is a legitimate
- question whether ZF + AC + CH or ZF + AC + ~CH is more useful when
- describing physical phenomena, and if you answer that question you can say
- whether CH is "true" in a very loose use of the term. I personally have no
- idea how you would go about answering that question.
-
- ==============================================================================
-
- Dennis Paul Himes <> dennis@cadkey.com
-
- ... said the Cat: "we're all mad here. I'm mad. You're mad."
- "How do you know I'm mad?" said Alice.
- "You must be," said the Cat, "or you wouldn't have come here." - Lewis Carroll
-