Ooh... 800+ pages, I must do it) Thanks.

Wow, looks like a very nice book and I had never heard of it. Thanks a lot for the recommendation.

A couple of additional recommendations I could give hball1st, in the context of CS and competitive programming would be:

• Competitive Programming, by Steven Halim and Felix Halim. It is filled with important mathematical/algorithmic concepts that are presented briefly and then accompanied by many recommendations for problems you may try in public Online Judges, and it has a chapter devoted to math (mainly number theory). It's on its 3rd edition, and the authors have been kind enough to release the 1st edition for free. It is useful as a simple reference.

• Concrete Mathematics, by Ronald Graham, Donald Knuth, and Oren Patashnik. It is an extensive, masterfully written (in my opinion) book, which gradually introduces a substantial amount of theory, and is filled with interesting, engaging excercises that will help you develop a deep understanding of its material. It is relatively expensive but, again, I think it's very much worth it. I truly think this book cannot be praised enough.

Newer version: http://courses.csail.mit.edu/6.042/fall13/mcs.pdf Old, but short version: https://www.cs.princeton.edu/courses/archive/fall13/cos340/LL.pdf