Acknowledgments
I express my appreciation to the following people for their useful comments and suggestions for the first edition of the book: F. Doyle Alexander, Stephen F. Austin State University; Steve Benson, Saint Olaf College; Paul M. Cook II, Furman University; Ronald H. Dalla, Eastern Washington University; Robert Fakler, University of Michigan–Dearborn; Robert M. Guralnick, University of Southern California; Edward K. Hinson, University of New Hampshire; Ron Hirschorn, Queen's University; David L. Johnson, Lehigh University; William R. Nico, California State University–Hayward; Kimmo I. Rosenthal, Union College; Erik Shreiner (deceased), Western Michigan University; S. Thomeier, Memorial University; and Marie A. Vitulli, University of Oregon.
I also want to thank all the readers who informed me about typographical and other minor errors in the third edition. Particular thanks go to:
Carl Faith, Rutgers University, for giving the book a careful study and making many very useful suggestions, too numerous to list here;
David French, Derbyshire, UK, for pointing out several typographical errors;
Michel Racine, Université d'Ottawa, for pointing out a mistake in an exercise deducing the commutativity of addition in a ring from the other axioms;
Yoji Yoshii, Université d'Ottawa, for revealing two errors in the exercises for Chapter 5;
Yiqiang Zhou, Memorial University of Newfoundland, for many helpful suggestions and comments.
For the fourth edition, special thanks go to: ...
