Über die Existenz von Wellenoperatoren für zeitabhängige Störungen.
Über maximale LP-Regularität für Differentialgleichungen in Banach- und Hilbert-Räumen.
Unconditional stability of difference formulas
The paper concerns the solution of partial differential equations of evolution type by the finite difference method. The author discusses the general assumptions on the original equation as well as its discretization, which guarantee that the difference scheme is unconditionally stable, i.e. stable without any stability condition for the time-step. A new notion of the -acceptability of the integration formula is introduced and examples of such formulas are given. The results can be applied to ordinary...
Une étude d'existence sur certains problèmes paraboliques
Une propriete arithmetique de certains operateurs differentiels.
Uniform exponential stability of linear almost periodic systems in Banach spaces.
Uniform exponential stability of linear periodic systems in a Banach space.