This introduction to discrete mathematics is aimed at freshmen and sophomores in mathematics and computer science. It begins with a survey of number systems and elementary set theory before moving on to treat data structures, counting, probability, relations and functions, graph theory, matrices, number theory and cryptography. The end of each section contains problem sets with selected solutions, and good examples occur throughout the text.

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"Wallis's book on discrete mathematics is a resource for an introductory course in a subject fundamental to both mathematics and computer science, a course that is expected not only to cover certain specific topics but also to introduce students to important modes of thought specific to each discipline . . . Lower-division undergraduates through graduate students. —CHOICE "Very appropriately entitled as a 'beginner's guide', this textbook presents itself as the first exposure to discrete mathematics and rigorous proof for the mathematics or computer science student." —ZENTRALBLATT MATH "This book introduces the basic topics of discrete mathematics to students of mathematics and computer science. ... It is appropriate for first-year students in mathematics and computer science. Sample problems and solutions are presented throughout the text. ... In addition, the book provides many exercises for each section of material. ... The book is very user-friendly. ... If you teach discrete mathematics at the beginning level to students ... I recommend that you take a look at this text." —SIGACT News

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