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Topic: Simple random number generator?
Replies: 8   Last Post: Dec 12, 2012 12:01 AM

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 Dr J R Stockton Posts: 1 Registered: 11/30/12
Re: Simple random number generator?
Posted: Nov 30, 2012 3:25 PM

In sci.math message <50b6cabe\$0\$24749\$607ed4bc@cv.net>, Wed, 28 Nov 2012
21:38:34, Existential Angst <fitcat@optonline.net> posted:

>
>So are the digits of pi random or not?
>

The digits of pi are not random, because, unless the base is changed,
they are the same every time and can be defined relatively briefly, even
without assuming a definition of pi (which pi may formally lack).

But any arbitrarily chosen sub-sequence of the digits of pi will, I
believe, pass an appropriate proportion of the usual tests for
randomness. Note that the full expansion of the digits of pi contains
as sub-sequences of a given length all possible digit strings of that
length, some of which will not look random to the untutored eye, such as
yours.

A real mathematician could put that more precisely.

--
(c) John Stockton, nr London UK. ???@merlyn.demon.co.uk Turnpike v6.05 MIME.
Web <URL:http://www.merlyn.demon.co.uk/> - FAQish topics, acronyms, & links.
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Date Subject Author
11/28/12 Ben Bacarisse
11/28/12 Existential Angst
11/29/12 Michael Stemper
11/30/12 Dr J R Stockton
12/1/12 Christopher J. Henrich
12/1/12 David Bernier
12/3/12 Michael Stemper
12/12/12 ross.finlayson@gmail.com