The Gamma Function (Dover Books on Mathematics)
Differential Geometry of Curves and Surfaces: Revised and Updated Second Edition (Dover Books on Mathematics)
A Brief Introduction to Theta Functions (Dover Books on Mathematics)
Outer Circles: An Introduction to Hyperbolic 3-Manifolds
Galois Theory: Lectures Delivered at the University of Notre Dame by Emil Artin (Notre Dame Mathematical Lectures, Number 2)
The Theory and Practice of Conformal Geometry (Aurora: Dover Modern Math Originals)
Geometric Algebra (Dover Books on Mathematics)
Prime Numbers and the Riemann Hypothesis
The Concept of a Riemann Surface (Dover Books on Mathematics)