Categories for the Working Mathematician

Math Storm Olympiad Problems

Homology

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

Mathematics Form and Function

Short-Cut Math

My Best Mathematical and Logic Puzzles

Sheaves in Geometry and Logic: A First Introduction to Topos Theory

What Is Mathematics?: An Elementary Approach to Ideas and Methods, Edition 2

Alex's Adventures in Numberland: Dispatches from the Wonderful World of Mathematics

536 Puzzles and Curious Problems

Concepts of Modern Mathematics

Zero: The Biography of a Dangerous Idea

Humble Pi: A Comedy of Maths Errors

The Book on Games of Chance: The 16th-Century Treatise on Probability

How to Calculate Quickly: Full Course in Speed Arithmetic

Figures for Fun: Stories, Puzzles and Conundrums

Complete Book of Origami Polyhedra: 64 Ingenious Geometric Paper Models (Learn Modular Origami from Japan's Leading Master!)