ON THE EXPONENTIAL STABILITY OF ADVECTION SEMIGROUPS WITH BOUNDARY OPERATORS

Author:

AMMAR-KHODJA FARID1,MOKHTAR-KHARROUBI MUSTAPHA1

Affiliation:

1. Laboratoire de Calcul Scientifique et Laboratoire de Mathématiques, Université de Franche-Comté, URA CNRS 741, 16, route de Gray, 25000 Besançon, France

Abstract

This paper deals with estimates of the type of advection semigroups with contraction boundary operator when the velocity space is bounded away from zero. Two approaches are given. The first one, using energy method, relies on Datko–Pazy's theorem while the second approach is based upon the analysis of the resolvent operator and the identity of the spectral bound (of generators) and the type of positive semigroups on Lp(μ) spaces by Weis.

Publisher

World Scientific Pub Co Pte Lt

Subject

Applied Mathematics,Modeling and Simulation

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