[FOM] "algorithm" and the Church-Turing Thesis
Lukasz T. Stepien
sfstepie at cyf-kr.edu.pl
Tue Aug 23 17:34:53 EDT 2016
Maybe you know this matter, but for any case, I would like to inform
about two books devoted to Church's Thesis. The first one is: Adam
Olszewski, Jan Wolenski and Robert Janusz (Eds.), "Church's Thesis After
70 Years", Ontos Verlag 2006. There are included, among others, the
chapters: Andreas Blass and Yuri Gurevich, "Algorithms: a Quest for
Absolute Definitions" and B. Jack Copeland, "Turing's Thesis".
One of the Editors of this book, Adam Olszewski, is also the Author of
the book: "Church's Thesis. The Historico-Philosophical Context",
UNIVERSITAS, Krakow 2009 (originally published in Polish, maybe an
English edition of this book, also exists - I don't know).
Lukasz T. Stepien
---
Lukasz T. Stepien
The Pedagogical University of Cracow
The Institute of Computer Science,
ul. Podchorazych 2
30-084 Krakow
Poland
tel. +48 12 662-78-54, +48 12 662-78-44
The URL http://www.ltstepien.up.krakow.pl
On 2016-08-22 20:57, Martin Davis wrote:
> The ongoing discussion on "Counterfactuals in relative computability theory" seems to take as a given that the Church-Turing Thesis makes precise the notion of "algorithm". But the Church-Turing Thesis says nothing about what algorithms ARE. It is about what algorithms can and can not DO. So for a given set S of natural numbers, the Church-Turing Thesis asserts that there is an algorithmic method for determining of a given natural number whether or not it belongs to S if and only if S is Turing computable.
>
> BTW the word "algorithm" occurs in none of the key founding papers by Church, Turing, Post, Kleene.
>
> Martin
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