© 2018 by Richard Hammack; Licensed under a Creative Commons Attribution-NonCommercial-NoDerivative 4.0 License
Third Edition
Richard Hammack

Paperback: ISBN: 978-0-9894721-2-8  ($21.75) Hardcover: ISBN: 978-0-9894721-3-5  ($36.15)

This book is an introduction to the standard methods of proving mathematical theorems. It has been approved by the American Institute of Mathematics' Open Textbook Initiative. See other endorsements here. An adoptions list is here, and
ancillary materials are here. See also the Translations Page.

You can order a copy through Barnes & Noble or Amazon. You can also download a free PDF version HERE. (The contents links below will take you to specific chapters in this file.)
Thanks to the readers who wrote to report mistakes and typos! I incorporate reader feedback in periodic revisions. Please contact me at rhammack@vcu.edu if you find any additional mistakes, no matter how minor.

Notice: On June 14, 2022 I issued edition 3.3 in print and PDF (ISBN's unchanged). This slight revision corrects a handful of typos found by readers. All orders printed after June 14 will be edition 3.3.

Note to adopters: Your bookstore will need to know that the book is distributed by Ingram. Please let me know if you use Book of Proof in your classes and I will update the adoptions list. Thanks!
Notice: The Creative Commons License allows you to freely use or share the book's PDF, in full or in part, provided you acknowledge it as the Author's work. It does not permit altering of content for anything other than personal use. Commercial use is forbidden (except by the publisher).