We will be using two free online textbooks this semester:

• Discrete Mathematics: An Open Introduction (DM) 4th Edition by Oscar Levin
• Combinatorics Through Guided Discovery (CTGD) by Kenneth Bogart

Note: The DM textbook is a new edition. If you experience issues with its interactive features, please use the previous edition:
https://discrete.openmathbooks.org/dmoi3.html

Lecture notes will also be posted on GitHub.