Curves in the Oriented PlaneExplores curves in the oriented plane, discussing orientation, vector spaces, equivalence relations, and curvature of regular curves.
Phase Plane AnalysisCovers the analysis of phase planes for linear systems and the Poincaré-Bendixson theorem.
Quantum Effective ActionExplores the quantum effective action, its role in perturbation theory, and the organization of correlators in momentum space.