Article View: sci.crypt
Article #2070Re: Cryptography and P=NP
From: Robert Marti
Date: Sat, 21 Nov 1992 16:25
Date: Sat, 21 Nov 1992 16:25
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In article <722206613@pike.cs.duke.edu> srt@duke.cs.duke.edu (Stephen R. Tate) writes: > Huh? I can think of very, very few algorithms (programs) that can not > be counted on to halt. Really? Well, since "very, very few" is a somewhat ill defined concept in mathematics, I can't even disagree with you. Do you mean - "there are fewer than M algorithms (programs) that cannot be counted on to halt" or - "there is a possibly infinite but countable number of algorithms (programs) that cannot be counted on to halt" or ... ? > To re-iterate: programs that cannot be counted on to halt are very, > very, very rare. Most people will never see one. I not only have seen one, I even have written one, albeit unintentionally. By the above statement, this probably makes my a special person in some sense -- if only especially stupid, maybe ;-) (Then again, I seem to recall other people telling me that they found out that they had an endless loop in their program. Oh, well ... ) -- Robert Marti | Phone: +41 1 254 72 60 Informationssysteme | FAX: +41 1 262 39 73 ETH-Zentrum | E-Mail: marti@inf.ethz.ch CH-8092 Zurich, Switzerland |
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Newsgroups: sci.crypt Path: arc1-ca.pugleaf.net!sparky!uunet!news.univie.ac.at!chx400!bernina!neptune!marti From: marti@inf.ethz.ch (Robert Marti) Subject: Re: Cryptography and P=NP Message-ID: <1992Nov21.162515.21287@neptune.inf.ethz.ch> Sender: news@neptune.inf.ethz.ch (Mr News) Nntp-Posting-Host: mint.inf.ethz.ch Organization: Dept. Informatik, ETH Zurich, Switzerland References: <1992Nov19.172719.1540@fid.morgan.com> <1992Nov19.193036.26711@rchland.ibm.com> <722206613@pike.cs.duke.edu> Date: Sat, 21 Nov 1992 16:25:15 GMT Lines: 29