Geometric analysis of hyperbolic differential equations : an introduction Its self contained presentation and do it yourself approach make this the perfect guide for graduate students and researchers wishing to access recent literature in the field of nonlinear wave equations and general relativity. It introduces all of the key tools and concepts from Lorentzian geometry (metrics null frames deformation tensors etc.) and provides complete elementary proofs. The author also discusses applications to topics in nonlinear equations including null conditions and stability of Minkowski space. No previous knowledge of geometry or relativity is required Provided by publisher