Mathematical World 2002; 131 pp; softcover Volume: 17 ISBN10: 0821821717 ISBN13: 9780821821718 List Price: US$34 Member Price: US$27.20 Order Code: MAWRLD/17
 There is a tradition in Russia that holds that mathematics can be both challenging and fun. One fine outgrowth of that tradition is the magazine, Kvant, which has been enjoyed by many of the best students since its founding in 1970. The articles in Kvant assume only a minimal background, that of a good high school student, yet are capable of entertaining mathematicians of almost any level. Sometimes the articles require careful thought or a moment's work with a pencil and paper. However, the industrious reader will be generously rewarded by the elegance and beauty of the subjects. This book is the third collection of articles from Kvant to be published by the AMS. The volume is devoted mainly to combinatorics and discrete mathematics. Several of the topics are well known: nonrepeating sequences, detecting a counterfeit coin, and linear inequalities in economics, but they are discussed here with the entertaining and engaging style typical of the magazine. The two previous collections treat aspects of algebra and analysis, including connections to number theory and other topics. They were published as Volumes 14 and 15 in the Mathematical World series. The articles are written so as to present genuine mathematics in a conceptual, entertaining, and accessible way. The books are designed to be used by students and teachers who love mathematics and want to study its various aspects, deepening and expanding upon the school curriculum. Readership Graduate students and research mathematicians interested in combinatorics and discrete mathematics. Table of Contents  I. M. Yaglom  Two games with matchsticks
 A. B. Katok  Economics and linear inequalities
 A. B. Katok  Economics and linear inequalities (Continuation)
 R. V. Freĭvald  Switching networks
 G. M. Adel'sonVel'skiĭ, I. N. Bernshteĭn, and M. L. Gerver  Who will go to Rio?
 A. L. Toom  From the life of units
 G. A. Gurevich  Nonrepeating sequences
 A. M. Stepin and A. T. TagiZade  Words with restrictions
 S. Ovchinnikov  Planar switching circuits
 P. Bleher and M. Kel'bert  Classification algorithms
 G. Shestopal  How to detect a counterfeit coin
 M. Mamikon  The generalized problem of counterfeit coins
 P. Bleher  Truthtellers, liars, and deceivers
 V. A. Uspenskiĭ and A. L. Semenov  Solvable and unsolvable algorithmic problems
 P. A. Pevzner  Best bet for simpletons
