home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!sun-barr!ames!elroy.jpl.nasa.gov!swrinde!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!ucbvax!FWI.UVA.NL!peter
- From: peter@FWI.UVA.NL (Peter van Emde Boas)
- Newsgroups: comp.theory
- Subject: Re: Are there reductions from Hilbert's 10th problem?
- Message-ID: <199209010915.AA06626@vera.fwi.uva.nl>
- Date: 1 Sep 92 23:03:13 GMT
- Sender: daemon@ucbvax.BERKELEY.EDU
- Reply-To: Peter van Emde Boas <peter@fwi.uva.nl>
- Lines: 16
-
- Dear Imre. I know of a prime example of a reduction from Hilbert 10
- which in the mean time seems to have been replaced by a far easier
- reduction by direct means.
-
- The reference is to be found in the ph.d. thesis of Jan van Leeuwen, Rule
- labeled programs, written under prof. D. van Dalen on which he graduated
- jun 07 1972.
-
- As told the same problem, dealing with the generative power of some
- specific class of controled context free grammars, nowadays can be
- solved directly in a few pages instead of the ca. 50 pages in this
- thesis. Still it is an example of the sort of reductions you seem to
- be looking for.
-
- Sincerely yours
- Peter van Emde Boas
-