257 pages; light rubbing to the covers. Minor smudges to the top exterior edge of textblock only. Discoloration on front endpapers. Good condition otherwise. No other noteworthy defects. No markings. ; - Your satisfaction is our priority. We offer free returns and respond promptly to all inquiries. Your item will be carefully cushioned in bubble wrap and securely boxed. All orders ship on the same or next business day. Buy with confidence.

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Bibliographic Details

Title: Forever Undecided A Puzzle Guide to Godel
Publisher: Alfred A. Knopf, New York, NY
Publication Date: 1987
Language: English
ISBN 10: 0394549430
ISBN 13: 9780394549439
Binding: Hardcover
Edition: First Edition.
Condition: Good+
Dust Jacket Condition: No Dust Jacket

About this title

Synopsis

Collects a variety of mathematics and logic puzzles, some based on the theorems of the mathematician Kurt Godel

Reviews

In these mathematical and logic puzzles, truth-telling knights battle lying knaves; a philosopher-logician named George falls in love with Oona, flighty bird-girl of the South Pacific; Inspector Craig and timid, conceited or modest reasoners match wits. Using such fictional enticements, the author of What Is the Name of This Book? and To Mock a Mockingbird steers us through the logical thickets of Kurt Godel's famous Incompleteness Theorem, which holds that mathematical systems can never prove their own consistency. Readers who make it halfway through this book will learn more symbolic logic than a college freshman stuffed with "new math." In the second half, the deeper waters of modal logic are navigated. This field, which dates back to Aristotle, impinges on current debates in computer science and artificial intelligence. Smullyan's gift is to make complex ideas both accessible and enjoyable to the persevering reader.
Copyright 1987 Reed Business Information, Inc.

Godel's incompleteness theorem is generally considered to have shown that formal number systems cannot prove their own consistency. Through a series of problems and solutions ("On the Island of Knights and Knaves, knights always make true statements and knaves always make false statements, and every inhabitant is either a knight or a knave . . . ") that are converted to symbolic logic, Smullyan progresses from an elementary to an advanced consideration of Godel's theorem. Apart from a few remarks at book's end, Smullyan makes no attempt to show what bearing Godel's results might have on more general, particularly epistemological, problems. Serious students of logic, computer theory, and artificial intelligence should find this entertaining and instructive, but it cannot be recommended for a larger audience. Leon H. Brody, U.S. Office of Personnel Management Lib., Washington,
Copyright 1987 Reed Business Information, Inc.

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