Partitions of spectral sets
Picard's theorem, Mittag-Leffler methods, and continuity of characters on Fréchet algebras
Pointwise multiplication operators on weighted Banach spaces of analytic functions
For a wide class of weights we find the approximative point spectrum and the essential spectrum of the pointwise multiplication operator , , on the weighted Banach spaces of analytic functions on the disc with the sup-norm. Thus we characterize when is Fredholm or is an into isomorphism. We also study cyclic phenomena for the adjoint map .
Polynomial identification in uniform and operator algebras.
Primary Ideals in Beurling Algebras.
Principalité des idéaux de type fini de
Projectivity of pure ideals
Propriétés spectrales en analyse non archimédienne