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- From: news@massey.ac.nz (USENET News System)
- Newsgroups: sci.math
- Subject: Re: Philosophy of Pi
- Message-ID: <1992Dec20.212707.9225@massey.ac.nz>
- Date: 20 Dec 92 21:27:07 GMT
- References: <1992Dec14.144954.11447@sifon.cc.mcgill.ca> <1992Dec18.114450.22206@lth.se>
- Organization: Massey University
- Lines: 27
-
- In article <1992Dec18.114450.22206@lth.se>, dat92oma@ludat.lth.se (Ola Martensson) writes:
- >
- > A friend and I discussed if you can find any integer anywhere
- > in the expansion of PI?
- >
- > 1415 , 92 etc is obvious BUT can you really find ALL integer
- > even unlimited ones???
-
- A number is said to be 'normal' in base 10 if every finite string of digits
- occurs eventually and with the same limiting relative frequency as any
- other sequence of the same length. E.g. 25369 should appear with frequency
- --> 10^(-5) in the first n digits as n --> oo. Similarly for other bases.
- A normal number is one which is normal in all bases.
-
- Normal numbers behave like random numbers. In fact a random sequence of
- digits will form a normal number. This implies that non-normal numbers
- will be rare. (To be more precise, almost all numbers - in a measure
- theoretic sense - are normal). Despite this, we do not know many normal
- numbers. Rational numbers are obviously non-normal.
-
- We do not know whether or not Pi is normal, but since it is not special
- in the way rational numbers are, it seems likely that it is.
-
- If Pi is normal, then the answer to your question is 'yes'. Pi would also
- hold all possible knowledge in a suitable code - e.g. the works of
- Shakespeare - as well as all possible mis-information (e.g. Shakepeare
- with every conceivable error).
-