Projective Geometry: A Short Introduction

Graduate text on tropical geometry by two researchers active in the field, with chapters on tropical curves, hypersurfaces, and the link to classical algebraic geometry. For readers comfortable with algebraic varieties.

Grigory Mikhalkin, Johannes Rau

Linfield College textbook that approaches geometry through the question of the shape of the universe. Covers Euclidean, hyperbolic, and elliptic geometry on the way to a primer on cosmic topology.

Michael P. Hitchman