A Cool Brisk Walk Through Discrete Mathematics - and its companion site "allthemath" - are completely-and-forever-free-and-open-source educational materials dedicated to the mathematics that budding computer science practitioners actually need to know. They feature the fun and addictive teaching of award-winning lecturer Dr. Stephen Davies of the University of Mary Washington in Fredericksburg, Virginia!
Permission is granted to copy, distribute, transmit and adapt this work under a Creative Commons Attribution-ShareAlike 4.0 International License.
Davies, Stephen. A Cool Brisk Walk through Discrete Mathematics, 2020. www.allthemath.org.