Calculus
Gilbert Strang
Mathematical Thinking: Problem-Solving and Proofs 2nd Edition
John P. D'Angelo & Douglas Brent West
Proximal Algorithms
Neal Parikh & Stephen P. Boyd & Now Publishers
A First Course in Mathematical Modeling
Frank R. Giordano & Maurice D. Weir & William P. Fox
Algorithm Design
Jon Kleinberg & Éva Tardos