On rotational-vibrational spectrum of diatomic beryllium molecule for the SOODE exactly solvable eigenvalue problem. The discrete energy eigenvalues and
eigenfunctions Single-mode propagation of adiabatic guided modes in smoothly irregular integral optical waveguides for eigenvalues and
eigenfunctions - adiabatic waveguide TE and TM polarizations. In this work, we present a
Symbolic-numerical simulation of leaky modes in a regular homogeneous open waveguide eigenvalues and
eigenfunctions of a mode. In this work, we used the wave coupling method, separation
Investigation of the eigenvalue problem on eigenvibration of a loaded string of
eigenfunctions. We formulate limit differential eigenvalue problems and prove the convergence of the eigenvalues
Approximation of the eigenvalue problem on eigenvibration of a loaded bar orthonormal system of
eigenfunctions. We formulate limit differential eigenvalue problems and prove
Boundary value problem for B-parabolic equation with integral condition of the first kind. The said solution is made as a sum of series by
eigenfunctions of the corresponding eigenvalue