home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: sci.math
- Path: sparky!uunet!secapl!Cookie!frank
- From: frank@Cookie.secapl.com (Frank Adams)
- Subject: Re: Puzzles
- Message-ID: <1992Aug17.222412.56760@Cookie.secapl.com>
- Date: Mon, 17 Aug 1992 22:24:12 GMT
- References: <1992Aug13.130820.313@csc.canterbury.ac.nz>
- Organization: Security APL, Inc.
- Lines: 21
-
- In article <1992Aug13.130820.313@csc.canterbury.ac.nz> wft@math.canterbury.ac.nz (Bill Taylor) writes:
- >John presents the Almost-Paradox
- >
- >[A-P] (1) it is provable that "for almost all n, P(n)".
- > (2) for any particular N, it is not provable that "P(N)".
- >
- >In this case, P(n) is the statement that n cannot be produced by a program
- >of length <= E. E is unspecified, but a value can be calculated (in principle).
- >
- >As a final bit of nonsensical musing on [A-P] as given; I got into the
- >following grand wild goose chase. I was trying to
- >imagine finding a number G, such that we could be reasonably sure (short of
- >a proof), that *all* numbers greater than G would need programs of length > E.
- >
- >Clearly it would have to be at least ...
- >
- If the formal system involved is at all powerful, it would have to be bigger
- than anything you can come up with. We're talking about the busy beaver
- problem here, into the range where even the size of the program is (by
- conventional standards) rather large. You can be sure that the smallest
- such G is absolutely, unimaginably, large.
-