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- Path: sparky!uunet!decwrl!concert!borg!news_server!martinc
- From: martinc@grover.cs.unc.edu (Charles R. Martin)
- Newsgroups: sci.logic
- Subject: Re: New Scientist 21 Mar 92
- Message-ID: <MARTINC.92Aug18182050@grover.cs.unc.edu>
- Date: 18 Aug 92 22:20:50 GMT
- References: <ALTI.92Aug18150326@tanera.dcs.ed.ac.uk>
- Sender: news@cs.unc.edu
- Organization: UNC Department of Computer Science
- Lines: 20
- In-reply-to: alti@dcs.ed.ac.uk's message of 18 Aug 92 14:03:26 GMT
-
- In article <ALTI.92Aug18150326@tanera.dcs.ed.ac.uk> alti@dcs.ed.ac.uk (Thorsten Altenkirch) writes:
-
- Has anybody had a look at Paul Davies article "Is nature
- mathematical?". I only browsed over it but I got the impression that
- he confuses the questions of undecidability ("1st order logic is
- undecidable" [Church]) and incompleteness ("Every consistent extension
- of Peano arithmetic is incomplete"[G"odel]). Any comments?
-
- I believe they're very closely connected. See e.g. Chaitin's
- Algorithmic Information Theory (Cambridge Tract in Theoretical CS, I
- think is the series.)
- --
- Charles R. Martin/(Charlie)/martinc@cs.unc.edu/(ne crm@cs.duke.edu)
- O/Dept. of Computer Science/CB #3175 UNC-CH/Chapel Hill, NC 27599-3175
- H/3611 University Dr #13M/Durham, NC 27707/(919) 419 1754
- ----------------------------------------------------------------------
- "I am he who walks the States with a barb'd tongue, questioning every
- one I meet,/Who are you that wanted only to be told what you knew
- before?/ Who are you that wanted only a book to join you in your
- nonsense?" _Leaves of Grass_ xxiii.4.
-