David+Champernowne

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 * Home * People * David Champernowne**

was an English mathematician and [|economist] who picked a hole in [|John Maynard Keynes's] [|General Theory of Employment, Interest and Money] and 'built a chess computer' with Alan Turing, a long-time friend from the time that they were undergraduates together at [|King's College, Cambridge].
 * David Gawen Champernowne**, (July 09, 1912 - August 19, 2000 )

=Champernowne constant= In 1933 David Champernowne had noticed and published a simple but new result about [|normal numbers], introducing the [|Champernowne constant] formed by concatenating positive integers. Kurt Mahler later showed it to also be [|transcendental].

C10 = 0.12345678910111213141516...

It seems very possible that Turing's interest in the constructive definition of [|real numbers] was stimulated by Champernowne's work, he took up this topic with some new results, and his manuscript notes were written on the back of the typescript of his 1936 paper //On computable numbers//.  =Turochamp= In 1948 Turing and Champernowne devised a chess playing program which they called Turochamp, which incorporated important methods of evaluation. Champernowne later gave this description of Turochamp :

=Round-the-house Chess= Quote from //First Law// :

=Selected Publications=
 * David Champernowne (**1933**). //The construction of decimals normal in the scale of ten//. [|Journal of the London Mathematical Society], vol. 8, p. 254-260
 * David Champernowne (**1969**). //Uncertainty and estimation in economics//. [|Holden Day], ISBN-13: 978-0050020067, [|google book], [|amazon]
 * David Champernowne, [|Frank Cowell] (**1998**). //Economic inequality and income distribution//. [|Cambridge University Press], ISBN-13: 978-0521589598, [|google book], [|amazon]

=External Links= =References= =What links here?= include page="David Champernowne" component="backlinks" limit="40"
 * [|D. G. Champernowne from Wikipedia]
 * [|Obituary: David Champernowne] by [|Brian Reddaway], [|The Guardian], September 01, 2000
 * [|Professor David Champernowne], obituary by [|M. Hashem Pesaran], [|The Telegraph], September 04, 2000
 * [|David Champernowne (1912-2000)], ICGA Journal, Vol. 23, No. 4
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