[FOM] Difference Engine

[José Félix Costa]

Panu Raatikainen wrote:

This is probably not the reference you meant, but anyway, the relation
between Babbage's engine and Turing computability etc. is discussed also
here: Gandy, Robin (1988) "The confluence of ideas in 1936", in: Rolf Herken
(ed.) The Universal Turing Machine. A Half-Century Survey, Oxford University
Press, Verlagen Berlin, 55-111.

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Many thanks.
However, there is one paper with a full proof of equivalence (a simulation
of a generic Turing machine, let us say).
I had the that paper, but it disapeared.


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J. Felix Costa
Departamento de Matematica
Instituto Superior Tecnico
Av. Rovisco Pais, 1049-001 Lisboa, PORTUGAL
tel:      351 - 21 - 841 71 45
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e-mail:   fgc at math.ist.utl.pt
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