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Forever Undecided - Smullyan, Raymond M.
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A challenging puzzle collection and an instructive and entertaining introduction to Kurt Godel's famous theorems, including incompleteness and undecidability. Much of the action of the book takes place on an imaginary and magical island, the Island of Knights and Knaves, where knights always make true statements, knaves always make false statements, and every inhabitant is either a knight or a knave. Here we meet an amazing array of characters, visitors to the island, seeking to determine the natives' true identities. Among ...

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Forever Undecided 2001, Oxford Paperbacks, Oxford

ISBN-13: 9780192801418

Paperback

Forever Undecided 1988, Oxford Paperbacks, Oxford

ISBN-13: 9780192821966

Paperback

Forever Undecided 1987, Alfred A. Knopf, New York, NY

ISBN-13: 9780394549439

Hardcover