home *** CD-ROM | disk | FTP | other *** search
- Xref: sparky comp.ai.philosophy:7430 sci.philosophy.tech:5010 sci.logic:2653
- Path: sparky!uunet!portal!nntp1.radiomail.net!csl.sri.com!csl.sri.com!usenet
- From: rar@csl.sri.com (Bob Riemenschneider)
- Newsgroups: comp.ai.philosophy,sci.philosophy.tech,sci.logic
- Subject: Re: Searle on syntax mirroring semantics
- Date: 28 Jan 93 13:02:18
- Organization: Computer Science Lab, SRI International, Menlo Park, CA.
- Lines: 20
- Message-ID: <1k9hj0INNaes@roche.csl.sri.com>
- References: <1993Jan26.121155.24448@sophia.smith.edu>
- NNTP-Posting-Host: birch.csl.sri.com
- In-reply-to: orourke@sophia.smith.edu's message of Tue, 26 Jan 1993 12:11:55 GMT
-
- In article <1993Jan26.121155.24448@sophia.smith.edu> orourke@sophia.smith.edu (Joseph O'Rourke) writes:
-
- > Can anyone explain this sentence to me? It is on p.203 of "The
- > Rediscovery of the Mind" by John Searle.
- >
- > The development of proof theory showed that within certain
- > well-known limits the semantic relations between propositions
- > can be entirely mirrored by the syntactic relations between
- > the sentences that express those propositions.
-
- The completeness theorem for first-order logic can be read as saying
- that, if P is a set of propositions that can be expressed by a set of
- first-order sentences S and q is a proposition that can be expressed by
- a first-order sentence t, then P formally implies q (a semantic
- relation) if and only if t is derivable from S (a syntactic relation).
- As a consequence, many other semantic relations correspond to syntactic
- relations. But not all do, by G\"odel's incompleteness theorems.
-
-
- -- rar
-