An Example on the Heisenberg Group Related to the Levy Operator.
An extension of the root perturbation -dimensional polynomial factorization method
An interval method for nonlinear systems of equations
An Iterative Procedure for the Solution of Constrained Nonlinear Equations with Application to Optimization Problems.
Analysis of a Damped Nonlinear Multilevel Method.
Application of matrix polynomials to investigation of singular equations.
Approximation des systèmes d'opérateurs pseudodifférentiels
Approximations and error bounds for computing the inverse mapping
In this paper we propose a procedure to construct approximations of the inverse of a class of differentiable mappings. First of all we determine in terms of the data a neighbourhood where the inverse mapping is well defined. Then it is proved that the theoretical inverse can be expressed in terms of the solution of a differential equation depending on parameters. Finally, using one-step matrix methods we construct approximate inverse mappings of a prescribed accuracy.
Approximations of continuous Newton's method: an extension of Cayley's problem.
Approximationseigenschaft, Lifting und Kohomologie bei lokalkonvexen Produktgarben.
Asymptotische Entwicklungen für Eigenwerte und Eigenvektoren bei der Approximation parameternichtlinearer Eigenwertaufgaben.
Auswertungsverfahren für Polynome in mehreren Variablen.