Mathematics and Plausible Reasoning, Volume 1: Induction and Analogy in Mathematics

Challenging Problems in Geometry

Modern Nonlinear Equations

Foundations and Fundamental Concepts of Mathematics

The Stanford Mathematics Problem Book: With Hints and Solutions

Geometry, Its Elements and Structure: Second Edition, Edition 2

The Mathematical Experience, Study Edition

Problems and Theorems in Analysis II: Theory of Functions. Zeros. Polynomials. Determinants. Number Theory. Geometry

A Beginner's Guide to Mathematical Logic

Problems and Theorems in Analysis I: Series. Integral Calculus. Theory of Functions

Measurement

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

Beautiful Geometry

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

Fundamental Concepts of Geometry

Mathematics for the Physical Sciences

A Transition to Advanced Mathematics: A Survey Course

536 Puzzles and Curious Problems