Sujet : Re: Repeated digits in Pi -- the Feynman point
De : richard (at) *nospam* cogsci.ed.ac.uk (Richard Tobin)
Groupes : rec.puzzlesDate : 26. Jun 2025, 20:50:14
Autres entêtes
Organisation : Language Technology Group, University of Edinburgh
Message-ID : <103k89m$k0uf$1@artemis.inf.ed.ac.uk>
References : 1 2 3 4
User-Agent : trn 4.0-test76 (Apr 2, 2001)
In article <
103k5nq$3ju79$1@dont-email.me>,
David Entwistle <
qnivq.ragjvfgyr@ogvagrearg.pbz> wrote:
3.14159 26535 89793 23846 26433 83279 41971 69399 3751...
3.14159 26535 89793 23846 26433 83279 50288 41971 6939...
(reformatted)
Presumably the first was copied from a listing in groups of 5 digits,
and one group was missed out.
Oh, who decides?
A substantial proportion of the population are capable of learning the
necessary maths and writing a program to determine which is correct.
A much smaller proportion are sufficiently motivated to do so.
If you don't trust the computer, it would be possible to use the
formula
pi = 16 atan(1/5) = 4 atan(1/239)
to calculate it by hand to that precision. William Shanks used it and
obtained 527 decimal places correctly in 1853. This was not surpassed
(and an error found in his later digits) until 1946 using a mechanical
calculator.
-- Richard
Repeated digits in Pi -- the Feynman point
Re: Repeated digits in Pi -- the Feynman point
