An open textbook for Discrete Mathematics, as taught at the University of Northern Colorado
This is the source code for the 3rd edition, corrected on March 24, 2019.
This is the source for the official 2nd edition, which matches the print version as well as the website as of August 16, 2016.
This current Fall 2015 edition of the text is essentially the first edition of the book. I have previously compiled many of the sections in a book format for easy distribution, but those were mostly just lecture notes and exercises (there was no index or Investigate problems; very little in the way of consistent formatting).
The book essentially as it was released after the Spring 2013 semester