Nombre de valeurs propres d'un opérateur elliptique et polynôme de Hilbert-Samuel
Non-attainable boundary values of H∞ functions.
Normal Hilbert modules over the ball algebra A(B)
The normal cohomology functor is introduced from the category of all normal Hilbert modules over the ball algebra to the category of A(B)-modules. From the calculation of -groups, we show that every normal C(∂B)-extension of a normal Hilbert module (viewed as a Hilbert module over A(B) is normal projective and normal injective. It follows that there is a natural isomorphism between Hom of normal Shilov modules and that of their quotient modules, which is a new lifting theorem of normal Shilov...
Norms of inverses, spectra, and pseudospectra of large truncated Wiener-Hopf operators and Toeplitz matrices.
Note on the spectral inclusion theorem for Toeplitz operators
Notes on unbounded Toeplitz operators in Segal-Bargmann spaces
Relations between different extensions of Toeplitz operators are studied. Additive properties of closed Toeplitz operators are investigated, in particular necessary and sufficient conditions are given and some applications in case of Toeplitz operators with polynomial symbols are indicated.