The reduced wave equation in layered materials
The regularized trace formula for the Sturm-Liouville equation with spectral parameter in the boundary conditions
The relation between the counting function N(lambda) and the heat kernel K(t)
The Riemann problem with additional singularities
The role of the helicity spectrum function in turbulent dynamo theory
The scattering matrix and associated formulas in Hamiltonian mechanics
The Schrödinger operator with Morse potential on the right half line
The Selberg trace formula for non-unitary representations of the lattice
The semiclassical limit of eigenfunctions of the Schrödinger equation and the Bohr-Sommerfeld quantization condition, revisited
The semiclassical structure of low-energy states in the presence of a magnetic field
The sharp form of the strong Szego theorem
The similarity problem for $J$-nonnegative Sturm-Liouville operators
The similarity problem for indefinite Sturm-Liouville operators with periodic coefficients
The Singularities of the Wave Trace of the Basic Laplacian of a Riemannian Foliation
The singularly continuous spectrum and non-closed invariant subspaces
The spatial spectrum of the primary geomagnetic field and the spectrum of its variations in time
The spectra of the spherical and euclidean triangle groups
The spectral density function for the Laplacian on high tensor powers of a line bundle
The spectral density function of a toric variety
The spectral density of the scattering matrix for high energies