Eigenstructure of nonselfadjoint complex discrete vector Sturm-Liouville problems.
Eigensystem of an L 2-perturbed harmonic oscillator is an unconditional basis
For any complex valued L p-function b(x), 2 ≤ p < ∞, or L ∞-function with the norm ‖b↾L ∞‖ < 1, the spectrum of a perturbed harmonic oscillator operator L = −d 2/dx 2 + x 2 + b(x) in L 2(ℝ1) is discrete and eventually simple. Its SEAF (system of eigen- and associated functions) is an unconditional basis in L 2(ℝ).
Eigenvalue approximation
Eigenvalue approximations for linear periodic differential equations with a singularity.
Eigenvalue characterization for a class of boundary value problems.
Eigenvalue comparisons for boundary value problems of the discrete beam equation.
Eigenvalue comparisons for differential equations on a measure chain.
Eigenvalue computations for regular matrix Sturm-Liouville problems.
Eigenvalue formulas for the uniform Timoshenko beam: the free-free problem.
Eigenvalue Inequalities for the Dirichlet Problem on Spheres and the Growth of Subharmonic Functions
Eigenvalue problems for a three-point boundary-value problem on a time scale.
Eigenvalue problems for -Laplacian functional dynamic equations on time scales.
Eigenvalue problems for systems of nonlinear boundary value problems on time scales.
Eigenvalue problems of Atkinson, Feller and Krein, and their mutual relationship.
Eigenvalue problems with functional-differential equations
Eigenvalues and symmetric positive solutions for a three-point boundary-value problem.
Eigenvalues of boundary value problems for higher-order differential equations.
Eigenvalues of the -Laplacian and disconjugacy criteria.
Eighty fifth anniversary of birthday and scientific legacy of Professor Miloš Ráb
The paper is concentrated on Professor Miloš Ráb and his contribution to the theory of oscillatory properties of solutions of second and third order linear differential equations, the theory of differential equations with complex coefficients and dynamical systems, and the theory of nonlinear second order differential equations. At the beginning, we take a brief look at the most important moments in his life. Afterwards, we describe his scientific activities on mentioned theories.
Ein Äquikonvergenzsatz für eine Klasse von singulären Differentialoperatoren.