home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!mcsun!sun4nl!and!jos
- From: jos@and.nl (Jos Horsmeier)
- Newsgroups: comp.theory
- Subject: Re: Real Numbers vs. Rational Numbers?
- Message-ID: <4287@dozo.and.nl>
- Date: 4 Jan 93 11:30:46 GMT
- References: <1992Dec17.142150.7932@tom.rz.uni-passau.de> <1hi8dvINN5l2@uwm.edu> <1993Jan3.151347.29159@tom.rz.uni-passau.de>
- Distribution: inet
- Organization: AND Software BV Rotterdam
- Lines: 25
-
- In article <1993Jan3.151347.29159@tom.rz.uni-passau.de> boerncke@kirk.fmi.uni-passau.de (Frank-Roland Boernke) writes:
-
- ||> Since "PI*PI" is a finite representation of PI * PI from which one can
- ||> algorithmically computer any of its digits in finite time, this counts as a
- ||> valid answer.
- ||>
- ||> If you don't consider this valid, then neither will you consider this valid:
- ||>
- ||> Calculate: 2 / 5
- ||> Answer: 2/5.
- ||>
- ||> So then on that account, computers can't even work with fractions.
-
- |I think there IS a difference:
- |
- |For 2/5 you can find a finite numeric representation ( 0.4 )
- |for PI or PI*PI you cannot!
-
- But what if we use a base PI representation? PI*PI obviously equals 100,
- which is definitely a finite numeric representation. There is none for 2/5,
- when using base PI.
-
- kind regards and happy new year!
-
- Jos aka jos@and.nl
-