Jump to ratings and reviews
Rate this book

Alan Turing's Systems of Logic: The Princeton Thesis

Rate this book
Between inventing the concept of a universal computer in 1936 and breaking the German Enigma code during World War II, Alan Turing (1912-1954), the British founder of computer science and artificial intelligence, came to Princeton University to study mathematical logic. Some of the greatest logicians in the world--including Alonzo Church, Kurt Godel, John von Neumann, and Stephen Kleene--were at Princeton in the 1930s, and they were working on ideas that would lay the groundwork for what would become known as computer science. This book presents a facsimile of the original typescript of Turing's fascinating and influential 1938 Princeton PhD thesis, one of the key documents in the history of mathematics and computer science. The book also features essays by Andrew Appel and Solomon Feferman that explain the still-unfolding significance of the ideas Turing developed at Princeton.

A work of philosophy as well as mathematics, Turing's thesis envisions a practical goal--a logical system to formalize mathematical proofs so they can be checked mechanically. If every step of a theorem could be verified mechanically, the burden on intuition would be limited to the axioms. Turing's point, as Appel writes, is that "mathematical reasoning can be done, and should be done, in mechanizable formal logic." Turing's vision of "constructive systems of logic for practical use" has become reality: in the twenty-first century, automated "formal methods" are now routine.

Presented here in its original form, this fascinating thesis is one of the key documents in the history of mathematics and computer science."

160 pages, Paperback

First published May 27, 2012

4 people are currently reading
225 people want to read

About the author

Alan M. Turing

48 books283 followers
Works of British mathematician Alan Mathison Turing explored the possibility of computers and raised fundamental questions about artificial intelligence; during World War II, he helped to decipher the German enigma codes and thus contributed to the Allied victory.

This highly influential English logician, cryptanalyst, and scientist developed and provided a formalization of the concept of "algorithm" with the eponymous machine, which played a significant role in the modern creation. People widely considered this father.

Turing worked for the government code and cypher school at Bletchley park, code-breaking center of Britain. For a time, he headed hut 8, the responsible naval section. He devised a number of techniques, including the method of the "bombe," an electromechanical machine that ably found settings, for breaking ciphers. After the war, he worked at the national physical laboratory and created the ACE of the first designs for a stored program.

Biology interested Turing towards the end of his life.
He wrote a paper on the chemical basis of morphogenesis and predicted oscillating reactions, such as the Belousov–Zhabotinsky, first observed in the 1960s.

Still illegal homosexual acts of Turing resulted in a criminal prosecution in 1952 in the United Kingdom. He accepted treatment with female hormones (chemical castration) as an alternative to prison. From cyanide poisoning, he died several weeks before his forty-second birthday. An inquest determined suicide; his mother and some other persons thought of his accidental death.

Following an Internet campaign, Gordon Brown, prime minister of Britain, on 10 September 2009 made an official public apology on behalf of the government for the postwar treatment of Turing.

Ratings & Reviews

What do you think?
Rate this book

Friends & Following

Create a free account to discover what your friends think of this book!

Community Reviews

5 stars
5 (50%)
4 stars
3 (30%)
3 stars
0 (0%)
2 stars
1 (10%)
1 star
1 (10%)
Displaying 1 - 2 of 2 reviews
Profile Image for Sid S.
61 reviews18 followers
November 17, 2016
This was absolutely inspiring to me during my undergrad thesis. It makes you realize that even the great Alan Turing wasn't immune to publishing politics of the day and the experiences of a typical PhD student. The writing in his doctoral thesis is terse and mathematical. Obviously I didn't get all of it. They day I understand readings like this, I can call myself a Computer Scientist. But the use of Lambdas and his thought experiments of machines which would go on to drive revolutions in the years to come, it was clear that this work was beyond its time.
Profile Image for Hongyu Hè.
13 reviews2 followers
February 16, 2025
I thoroughly enjoyed the first part of the book, where Prof. Appel provides a fascinating glimpse into the history of mechanized formal logic and the “secret interactions” among the brilliant minds behind its development. The strong connection to Princeton added an extra layer of excitement for me. However, the book took a challenging turn when Prof. Feferman suddenly delved into lambda calculus, presenting concepts that were increasingly difficult to parse. While this section demanded more focus, the inclusion of Turing’s original Princeton thesis was a delight. There’s something uniquely rewarding about poring over his handwritten formulas and following threads of his reasoning, even if the characters appear (quite) blurry sometimes.
Displaying 1 - 2 of 2 reviews

Can't find what you're looking for?

Get help and learn more about the design.