- Street-Fighting Math: Guessing & Opportunistic Problem Solving
- Mathematical Surprises (Mordechai Ben-Ari)
- Mathematical Omnibus: Thirty Lectures on Classic Mathematics
- Fractal Geometry: Mathematical Foundations and Applications
- Making up Numbers: A History of Invention in Mathematics
- Mathematica® Programming: an Advanced Introduction
- Algebra: A Classical Approach (Jon Blakely)
- Algebra: A Computational Introduction (John Scherk) (2016)
- A Computational Introduction to Number Theory and Algebra
- Calculus (Gilbert Strang)
- Measure, Integration and Real Analysis (Sheldon Axler)
- Elementary Calculus (Michael Corral)
- Real Variables with Basic Metric Space Topology (Robert B. Ash)
- How We Got from There to Here: A Story of Real Analysis
- An Invitation to Applied Category Theory: Seven Sketches
- Topology: A Categorical Approach (Tai-Danae Bradley, et al)
- Category Theory for Programmers (Bartosz Milewski)
- Combinatorics Through Guided Discovery (Kenneth P. Bogart)
- Applied Combinatorics (Mitchel T. Keller, et al)
- Number Theory: In Context and Interactive, using SageMath
- Elementary Number Theory using SageMath (William Stein)
- Notes on Diffy Qs: Differential Equations for Engineers (Jiri Lebl)
- Solving PDEs in Python: The FEniCS Tutorial I (H. Langtangen)
- A Friendly Introduction to Differential Equations (M. Kaabar)
- Elementary Differential Equations (William F. Trench)
- A Cool Brisk Walk Through Discrete Mathematics (Stephen Davies)
- Discrete Mathematics: An Open Introduction (Oscar Levin)
- Mathematical Surprises (Mordechai Ben-Ari)
- The Essence of Mathematics Through Elementary Problems
- Mathematics of Economics and Business (Frank Werner, et al.)
- Financial Mathematics: Concepts and Computational Methods
- Financial Numerical Recipes in C++: Applications in Finance
- Python 3 Patterns, Recipes and Idiom (2017)
- Game Theory: An Open Access Textbook (Giacomo Bonanno)
- Introduction to Game Theory: a Discovery Approach
- Topology without Tears (Sidney A. Morris)
- Computational Linear Algebra and N-dimensional Geometry
- Algorithms in Real Algebraic Geometry (Saugata Basu, et al)
- A Friendly Introduction to Mathematical Logic (Chris Leary)
- Incompleteness and Computability: Gödel's Theorems
- Gödel Without (Too Many) Tears (Peter Smith)
- A Problem Course in Mathematical Logic (Stefan Bilaniuk)
- Elementary Calculus: An Infinitesimal Approach (H. Jerome Keisler)
- Music: A Mathematical Offering (David J. Benson)
- Elementary Number Theory: Primes, Congruences, and Secrets
- Number Theory: In Context and Interactive (Karl-Dieter Crisman)
- Introduction to Probability for Data Science (Stanley Chan)
- Introduction to Probability, Statistics, and Random Processes
- Probability in Electrical Engineering and Computer Science
- Introduction to Modern Statistics (Mine Çetinkaya-Rundel, et al.)
- O'Reilly® Think Bayes: Bayesian Statistics in Python
- Statistics Done Wrong: The Woefully Complete Guide (Reinhart)
- An Introduction to Statistical Learning: with Applications in R
- Graph Theory (Reinhard Diestel)
- Graph Theory Lessons (Christopher P. Mawata)
- Handbook of Applied Cryptography (Alfred J. Menezes, et al)
- Modern Cryptography Volume 1: A Classical Introduction
- Practical Cryptography for Developers (Svetlin Nakov)
- The Joy of Cryptography (Mike Rosulek)
- Tea Time Numerical Analysis: Experiences in Mathematics