Discrete Mathematics with Applications
Key differences between 4th and 3rd editions
 Period between current and previous editions: 7 years (2010 vs 2003).
 The First Ed. of Epp's Discrete Mathematics with Applications appeared in 1994.
 The Fourth Ed. is available in electronic book format.
 About 300 new exercises have been added to the Fourth Ed.
 Additional full answers have been incorporated into Appendix B "Solutions and Hints to Selected Exercises".
 Chapter 1 "Speaking Mathematically" introduces some of the precise language that is a foundation for much mathematical thought
 Variables
 The Language of Sets
 The Language of Relations and Functions
 Chapter 3
 New topic "Only If of Universal Conditional Statements"
 Chapter 4 includes new topics:
 Variations among Proofs
 Absolute Value and the Triangle Inequality
 Chapter 5 "Sequences, Mathematical Induction, and Recursion" covers material which in the previous edition was presented in two separate chapters "Sequences and Mathematical Induction" and "Recursion"
 Chapter 6:
 New discussion on Proof and Disproof
 Chapter 7:
 Increased coverage of functions of more than one variable and of functions acting on sets.
 Chapter 8 includes new topics:
 Extending the Euclidean Algorithm
 RSA Cryptography
 Chapter 10:
 New material on Dijkstra's Shortest Path Algorithm
 New exercises on o graph coloring.
 Updated terminology about traveling in a graph
 Chapter 11 "Analysis of Algorithm Efficiency" includes material from the former chapter "The Efficiency of Algorithms"
 New topic on Binary Search
 Chapter 12:
 New topic "The Language Defined by a Regular Expression"
4th Edition of
Discrete Mathematics with Applications
eBook, 984 pages
eBook ISBN: 9781133168669
Published by: Cengage Learning, August 04, 2010
Book Store  Price 
 Available

 $26.22 
Hardcover, 984 pages
ISBN10: 0495391328
ISBN13: 9780495391326
Published by: Cengage Learning, August 04, 2010
Book Store  New  Used  Rent 
 $208.67

From: $82.26  
 $290.99 
From: $196.00 

3rd Edition of
Discrete Mathematics with Applications
Hardcover, 928 pages
ISBN10: 0534359450
ISBN13: 9780534359454
Published by: Cengage Learning, December 22, 2003
Book Store  New  Used  Rent 
 $121.88

From: $3.52  
2nd Edition of
Discrete Mathematics With Applications
Hardcover, 828 pages
ISBN10: 0534944469
ISBN13: 9780534944469
Published by: Brooks/Cole Pub Co, September 26, 1996
Book Store  New  Used  Rent 
 $29.44

From: $1.95  
Saving advice
Hardcover
 Used 4th edition can save you $126.41 over the new one.

Used previous 3rd edition costs $78.74 less than the used 4th.