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The book presents the theory of multiple trigonometric sums constructed by the authors. Following a unified approach, the authors obtain estimates for these sums similar to the classical I. M. Vinogradov ́s estimates and use them to solve several problems in analytic number theory. They investigate trigonometric integrals, which are often encountered in physics, mathematical statistics, and analysis, and in addition they present purely arithmetic results concerning the solvability of equations in integers.
Review text: "The book is written very carefully and contains at the beginning of each chapter an introduction which is very well readable. It will certainly replace the former monographies on this theme."J. Schoissengeier in: Monatshefte für Mathematik 1/2006 "The book will be useful for a wide range of mathematicians."EMS newsletter 9/2005.
This is a continuation of a series of comprehensive chronological reference works listing the results of men's chess competitions all over the world--individual and team matches. The present volume covers 1968 through 1970. Entries record location and, when available, the group that sponsored the event. First and last names of players are included whenever possible and are standardized for easy reference. Compiled from contemporary sources such as newspapers, periodicals, tournament records and match books, this work contains 854 tournament crosstables and 161 match scores. It is indexed by events and by players.