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Discrete Mathematics and Its Applications – Kenneth Rosen | Discrete Mathematics Study Guide

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Discrete Mathematics and Its Applications by Kenneth H. Rosen (ISBN 978-1-259-67651-2) is a comprehensive study resource covering essential concepts in discrete mathematics, including logic, proofs, sets, relations, functions, algorithms, number theory, counting, discrete probability, graphs, trees, and Boolean algebra. Ideal for computer science, mathematics, engineering, and information technology students preparing for coursework, assignments, quizzes, and exams.

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Kenneth H. Rosen




Discrete
Mathematics
and Its
Applications
Eighth Edition


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Discrete
Mathematics
and Its
Applications
Eighth Edition




Kenneth H. Rosen
formerly AT&T Laboratories




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DISCRETE MATHEMATICS AND ITS APPLICATIONS, EIGHTH EDITION
Published by McGraw-Hill Education, 2 Penn Plaza, New York, NY 10121. Copyright  c 2019 by McGraw-Hill Education. All rights reserved. Printed
in the United States of America. Previous editions  c 2012, 2007, and 2003. No part of this publication may be reproduced or distributed in any form or
by any means, or stored in a database or retrieval system, without the prior written consent of McGraw-Hill Education, including, but not limited to, in any
network or other electronic storage or transmission, or broadcast for distance learning.

Some ancillaries, including electronic and print components, may not be available to customers outside the United States.


This book is printed on acid-free paper.


1 2 3 4 5 6 7 8 9 LWI 21 20 19 18


ISBN 978-1-259-67651-2
MHID 1-259-67651-X


Product Developer: Nora Devlin
Marketing Manager: Alison Frederick
Content Project Manager: Peggy Selle
Buyer: Sandy Ludovissy
Design: Egzon Shaqiri
Content Licensing Specialist: Lorraine Buczek
c
Cover Image: Karl Dehnam/Alamy Stock Photo
Compositor: Aptara, Inc.




All credits appearing on page or at the end of the book are considered to be an extension of the copyright page.




Library of Congress Cataloging-in-Publication Data


Names: Rosen, Kenneth H., author.
Title: Discrete mathematics and its applications / Kenneth H. Rosen, Monmouth
University (and formerly AT&T Laboratories).
Description: Eighth edition. | New York, NY : McGraw-Hill, [2019] | Includes
bibliographical references and index.
Identifiers: LCCN 2018008740| ISBN 9781259676512 (alk. paper) |
ISBN 125967651X (alk. paper)
Subjects: LCSH: Mathematics. | Computer science–Mathematics.
Classification: LCC QA39.3 .R67 2019 | DDC 511–dc23 LC record available at
https://lccn.loc.gov/2018008740




The Internet addresses listed in the text were accurate at the time of publication. The inclusion of a website does not indicate an endorsement by the
authors or McGraw-Hill Education, and McGraw-Hill Education does not guarantee the accuracy of the information presented at these sites.




mheducation.com/highered


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Contents
About the Author vi
Preface vii
Online Resources xvi
To the Student xix

1 The Foundations: Logic and Proofs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Propositional Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Applications of Propositional Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1.3 Propositional Equivalences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
1.4 Predicates and Quantifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
1.5 Nested Quantifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
1.6 Rules of Inference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
1.7 Introduction to Proofs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
1.8 Proof Methods and Strategy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
End-of-Chapter Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115

2 Basic Structures: Sets, Functions, Sequences, Sums,
and Matrices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
2.1 Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
2.2 Set Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
2.3 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
2.4 Sequences and Summations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
2.5 Cardinality of Sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
2.6 Matrices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
End-of-Chapter Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 195

3 Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
3.1 Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 201
3.2 The Growth of Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216
3.3 Complexity of Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 231
End-of-Chapter Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244

4 Number Theory and Cryptography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
4.1 Divisibility and Modular Arithmetic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
4.2 Integer Representations and Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260
4.3 Primes and Greatest Common Divisors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 271
4.4 Solving Congruences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .290
4.5 Applications of Congruences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303
4.6 Cryptography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
End-of-Chapter Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 324

iii


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