Title: Hyperbolic partial differential equations and geometric optics
Subjects: Geometrical optics, Hyperbolic Differential equations, Partial differential equations -- Equations of mathematical physics and other areas of application -- PDEs in connection with optics and electromagnetic theory, Partial differential equations -- General topics -- Propagation of singularities, Mathematics, Optics, electromagnetic theory -- General -- Lasers, masers, optical bistability, nonlinear optics, Microlocal analysis, Singularities (Mathematics), Optics, electromagnetic theory -- Basic methods -- Asymptotic analysis, Optics, electromagnetic theory -- General -- Geometric optics, Systems theory; control -- Controllability, observability, and system structure -- Observability, Partial differential equations -- Equations of mathematical physics and other areas of application -- Euler equations, Partial differential equations -- General topics -- Geometric theory, characteristics, transformations, Partial differential equations -- General topics -- Microlocal methods; methods of sheaf theory and homological algebra in PDE, Partial differential equations -- General topics -- Wave front sets, Singularities (mathematics), Differential equations, hyperbolic, Differential equations, partial, Functional analysis, System theory, Geometrische Optik, Hyperbolische Differentialgleichung