Essential Linear Algebra with Applications: A Problem-Solving Approach

The Colorado Mathematical Olympiad and Further Explorations: From the Mountains of Colorado to the Peaks of Mathematics

Mathematical Olympiad Challenges

The Mathematical Coloring Book: Mathematics of Coloring and the Colorful Life of its Creators

Number Theory: Structures, Examples, and Problems

How to Solve It: A New Aspect of Mathematical Method

Complex Numbers from A to ... Z: Edition 2

An Introductory Course in Elementary Number Theory

102 Combinatorial Problems: From the Training of the USA IMO Team

Short Tricks of Math

A Beginner's Guide to Constructing the Universe: The Mathematical Archetypes of Nature, Art, and Science

Geometric Problems on Maxima and Minima

Logically Fallacious: The Ultimate Collection of Over 300 Logical Fallacies (Academic Edition)

104 Number Theory Problems: From the Training of the USA IMO Team

Alan Turing: The Enigma: The Book That Inspired the Film The Imitation Game - Updated Edition

Humble Pi: A Comedy of Maths Errors

A Path to Combinatorics for Undergraduates: Counting Strategies

How Numbers Work: Discover the strange and beautiful world of mathematics

Putnam and Beyond