Ein Satz über analytische Forstetzung fastperiodischer Funktionen.
Ensembles de fréquences et fonctions presque périodiques
Equicontinuous families of operators generating mean periodic maps
The existence of mean periodic functions in the sense of L. Schwartz, generated, in various ways, by an equicontinuous group or an equicontinuous cosine function forces the spectral structure of the infinitesimal generator of or . In particular, it is proved under fairly general hypotheses that the spectrum has no accumulation point and that the continuous spectrum is empty.
Étude asymptotique des vibrations des sphères
Existence of almost automorphic solutions to some classes of nonautonomous higher-order differential equations.
Existence of doubly-weighted pseudo almost periodic solutions to non-autonomous differential equations.
Existence of pseudo almost periodic solutions to some classes of partial hyperbolic evolution equations.