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Synopsis
The $3x 1$ problem, or Collatz problem, concerns the following seemingly innocent arithmetic procedure applied to integers: If an integer $x$ is odd then ""multiply by three and add one"", while if it is even then ""divide by two"". The $3x 1$ problem asks whether, starting from any positive integer, repeating this procedure over and over will eventually reach the number 1. Despite its simple appearance, this problem is unsolved. Generalizations of the problem are known to be undecidable, and the problem itself is believed to be extraordinarily difficult. This book reports on what is known on this problem. It consists of a collection of papers, which can be read independently of each other. The book begins with two introductory papers, one giving an overview and current status, and the second giving history and basic results on the problem. These are followed by three survey papers on the problem, relating it to number theory and dynamical systems, to Markov chains and ergodic theory, and to logic and the theory of computation. The next paper presents results on probabilistic models for behavior of the iteration. This is followed by a paper giving the latest computational results on the problem, which verify its truth for $x < 5.4 \cdot 10^{18}$. The book also reprints six early papers on the problem and related questions, by L. Collatz, J. H. Conway, H. S. M. Coxeter, C. J. Everett, and R. K. Guy, each with editorial commentary. The book concludes with an annotated bibliography of work on the problem up to the year 2000.
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About the Author
Edited by Jeffrey C. Lagarias, University of Michigan, Ann Arbor, MI, USA
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The Ultimate Challenge: The 3X + 1 Problem
Published by
American Mathematical Society, 2011
ISBN 10: 0821849409
ISBN 13: 9780821849408
Used
Hardcover
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The Ultimate Challenge: The 3x+1 Problem
Published by
Amer Mathematical Society, 2011
ISBN 10: 0821849409
ISBN 13: 9780821849408
Used
Hardcover
Seller: Goodbooks Company, Springdale, AR, U.S.A.
Seller rating 5 out of 5 stars
Condition: acceptable. This copy may contain significant wear, including bending, heavy writing, tears, and or water damage. This book is a functional copy, not necessarily a beautiful copy. Copy may have loose pages. May not include access codes or CDs. May be an Ex library book with stickers and stamps. Dustjacket may be missing. Seller Inventory # GBV.0821849409.A
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