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11M35 - Hurwitz and Lerch zeta functions [MSC 2020] |
11M36 - Selberg zeta functions and regularized determinants; applications to spectral theory, Dirichlet series, Eisenstein series, etc. (explicit formulas) [MSC 2020] |
33F05 - Numerical approximation and evaluation of special functions [MSC 2020] |
34L16 - Numerical approximation of eigenvalues and of other parts of the spectrum of ordinary differential operators [MSC 2020] |
35B25 - Singular perturbations in context of PDEs [MSC 2020] |
37C30 - Functional analytic techniques in dynamical systems; zeta functions, (Ruelle-Frobenius) transfer operators, etc. [MSC 2020] |
58J37 - Perturbations of PDEs on manifolds; asymptotics [MSC 2020] |
58J50 - Spectral problems; spectral geometry; scattering theory on manifolds [MSC 2020] |
58J51 - Relations between spectral theory and ergodic theory, e.g. quantum unique ergodicity [MSC 2020] |