English

Vilenkin Combinatorial Mathematics

In the present book, the aim has been to set forth a variety of combinatorial problems in popular form and understandable language. At the same time, an attempt is made to present some rather involved combinatorial problems and to give the reader an idea of the methods of recurrence relations and generating functions. The first chapter is devoted to the general rules of combinatorics, the rules of sum and product. In the second chapter we investigate permutations and combinations. This traditionally grade-school material is accompanied by an analysis of some amusing examples. In the third chapter, a study is made of combinatorial problems in which certain restrictions are imposed on the combinations. Chapter IV considers problems involving partitions of numbers into integers and- contains a description of certain geometrical methods in combinatorics. Chapter V is devoted to random-walk problems and to a variety of modifications of the arithmetic triangle. Chapter VI takes up recurrence relations, and Chapter VII discusses generating functions and, in particular, the binomial formula. The last section of the book is devoted to combinatorial problems of which there are over 400. This

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