Ein Äquikonvergenzsatz für eine Klasse von singulären Differentialoperatoren.
Eine Bemerkung zum Zusammenhang des Randwertproblems mit begleitender Gleichung
Einschließungsaussagen bei Differentialoperatoren zweiter Ordnung durch punktweise Ungleichungen.
Einschliessungsaussagen für Differentialoperatoren vierter Ordnung und ein Verfahren zur Berechnung von Schrankenfunktionen.
Enclosures and semi-analytic discretization of boundary value problems
Energy methods for curved composite beams with partial shear interaction
This paper presents a derivation of the Rayleigh- Betti reciprocity relation for layered curved composite beams with interlayer slip. The principle of minimum of potential energy is also formulated for two-layer curved composite beams and its applications are illustrated by numerical examples. The solution of the presented problems are obtained by the Ritz method. The applications of the Rayleigh-Betti reciprocity relation proven are illustrated by some examples.
Erratum. On the Reduction of Holt's Problem to a Finite Interval.
Error estimates for external approximation of ordinary differential equations and the superconvergence property
A pointwise error estimate and an estimate in norm are obtained for a class of external methods approximating boundary value problems. Dependence of a superconvergence phenomenon on the external approximation method is studied. In this general framework, superconvergence at the knot points for piecewise polynomial external methods is established.
Even order differential equations with measures as coefficients
Even order self adjoint time scale problems.
Existence of almost automorphic solutions to some classes of nonautonomous higher-order differential equations.
Existence of multiple solutions for a class of second-order ordinary differential equations.
Existence theorems for a certain nonlinear boundary value problem of the third order
Explicit solutions for boundary value problems related to the operator equations
Cauchy problem, boundary value problems with a boundary value condition and Sturm-Liouville problems related to the operator differential equation are studied for the general case, even when the algebraic equation is unsolvable. Explicit expressions for the solutions in terms of data problem are given and computable expressions of the solutions for the finite-dimensional case are made available.
Exponential functions as boundary layer functions.
Exponentially fitted spline approximation method for solving selfadjoint singular perturbation problems.