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- Xref: sparky sci.math:9694 rec.puzzles:5371 comp.theory:1714
- Newsgroups: sci.math,rec.puzzles,comp.theory
- Path: sparky!uunet!s5!sethb
- From: sethb@fid.morgan.com (Seth Breidbart)
- Subject: Re: Ten equals 9.9999....
- Message-ID: <1992Jul30.232641.21205@fid.morgan.com>
- Organization: my opinions only
- References: <1992Jul29.041320.8481@samba.oit.unc.edu> <Bs5HpH.8wG@watdragon.uwaterloo.ca> <1992Jul29.165039.15193@CSD-NewsHost.Stanford.EDU>
- Date: Thu, 30 Jul 1992 23:26:41 GMT
- Lines: 23
-
- In article <1992Jul29.165039.15193@CSD-NewsHost.Stanford.EDU>
- bhayes@Xenon.Stanford.EDU (Barry Hayes) writes:
-
- >For example, I will define the following sequence:
- >P[n] is the nth digit in the decimal expansion of Pi: P[1] = 1, P[2] = 4. . .
- >A[n] is 0 if P[n] through P[100+n] are all ones.
- >A[n] is 1/10^n if P[n] through P[n+100] are all twos.
- >A[n] is P[n]/10^n
- >
- >Note that since any P[n] can be computed, any A[n] can be computed.
- >
- >Now define A as the infinite sum of all the A[n]'s. If you believe in
- >Pi, you have to believe in A. Well, what's the order between A and
- >Pi? Depends a lot on Pi, doesn't it?
-
- A is a computable number. I don't know if A < pi, A = pi, or A > pi.
- If A != pi, then we'll eventually find out (when the program runs long
- enough). If A = pi, we might or might not eventually find out.
-
- Define B as the 10^10^100'th digit in the decimal expansion of pi.
- Is B > 5?
-
- Seth sethb@fid.morgan.com
-