Dyatlov, Semyon, (1987-)

Frequencies of oscillating systems Partial differential equations -- Spectral theory and eigenvalue problems -- Scattering theory. Quantum theory -- General mathematical topics and methods in quantum theory -- Non-selfadjoint operator theory in quantum theory. Scattering (Mathematics) Ordinary differential equations -- Ordinary differential operators -- Scattering theory, inverse scattering. Oscillations Partial differential equations -- Spectral theory and eigenvalue problems -- Asymptotic distribution of eigenvalues and eigenfunctions. Quantum theory -- Scattering theory -- $S$-matrix theory, etc.. Quantum theory -- General mathematical topics and methods in quantum theory -- Semiclassical techniques, including WKB and Maslov methods. Mathematical physics