Über Defektbegriffe in der Theorie der meromorphen Funktionen.
Zur Nullpunktabhängigkeit der Nevanlinnaschen Defekte.
Estimates of solutions to linear elliptic systems and equations
Whenever nonlinear problems have to be solved through approximation methods by solving related linear problems a priori estimates are very useful. In the following this kind of estimates are presented for a variety of equations related to generalized first order Beltrami systems in the plane and for second order elliptic equations in . Different types of boundary value problems are considered. For Beltrami systems these are the Riemann-Hilbert, the Riemann and the Poincaré problem, while for elliptic...
Nonlinear Riemann Boundary Value Problems for a Nonlinear Elliptic System in the Plane.
Iterations of Pompeiu operators.
Boundary value problems in complex analysis. II.
Dirichlet problems for the biharmonic equation.
Iteration of the Pompeiu integral operator and complex higher order equations.
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