Elementary Matrix Theory

A Transition to Advanced Mathematics: A Survey Course

Fundamental Concepts of Mathematics

Introduction to Mathematical Thinking: The Formation of Concepts in Modern Mathematics

How to Solve It: A New Aspect of Mathematical Method

Set Theory and Logic

Mathematical Logic

A Beginner's Further Guide To Mathematical Logic

A Beginner's Guide to Mathematical Logic

536 Puzzles and Curious Problems

The Canterbury Puzzles and Other Curious Problems

Fast Math: Learn the Secrets of Mental Math: By Using Vedic Math and Other Math Tricks to Perform Mental Calculations from Multiplication to Percentages without Calculators

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

The Gödelian Puzzle Book: Puzzles, Paradoxes and Proofs

Quadratic Equation: new and easy way to solve equations

MATHEMAICS FORMULAE

The Mathematical Experience, Study Edition

An Illustrated Book of Bad Arguments: Learn the Lost Art of Making Sense (Bad Arguments)

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