Table of Contents

Introduction to Beltrami's Essay on the interpretation of noneuclidean geometry Translation of Beltrami's Essay on the interpretation of noneuclidean geometry Introduction to Beltrami's Fundamental theory of spaces of constant curvature Translation of Beltrami's Fundamental theory of spaces of constant curvature Introduction to Klein's On the so-called noneuclidean geometry Translation of Klein's On the so-called noneuclidean geometry Introduction to Poincare's Theory of fuchsian groups, Memoir on kleinian groups, On the applications of noneuclidean geometry to the theory of quadratic forms Translation of Poincare's Theory of fuchsian groups Translation of Poincare's Memoir on kleinian groups Translation of Poincare's On the applications of noneuclidean geometry to the theory of quadratic forms Index.