How to Prove It: A Structured Approach
Daniel J. Velleman
Recommender Systems: The Textbook
Charu C. Aggarwal
Reading, Writing, and Proving: A Closer Look at Mathematics
Ulrich Daepp & Pamela Gorkin
Why Greatness Cannot Be Planned: The Myth of the Objective
Kenneth O. Stanley & Joel Lehman
Collection of Problems in Probability Theory
L. D. Meshalkin
Combinatorial Optimization: Theory and Algorithms
Bernhard Korte & Jens Vygen
Algorithms and Combinatorics (2)