Numbers: A Very Short Introduction

Math Storm Olympiad Problems

Professor Higgins's Problem Collection

Fundamental Concepts of Abstract Algebra

Number Story: From Counting to Cryptography

Elements of Abstract Algebra

Mathematics for the Curious

Groups and Symmetry

Mathematics for the Imagination

Class Groups of Number Fields and Related Topics

Abstract Algebra: A First Course, Second Edition

Higher Topos Theory

Advanced Algebra

Deep Down Things: The Breathtaking Beauty of Particle Physics

Theorems And Lemmas In Mathematics

Representation Theory of Finite Groups: An Introductory Approach

Introduction to the Theory of Abstract Algebras

Introduction to Abstract Algebra: Edition 4

Algebraic K-theory: The Homotopy Approach Of Quillen And An Approach From Commutative Algebra