Slepian's inequality and commuting semigroups
Slowly changing vectors and the asymptotic finite-dimensionality of an operator semigroup.
Smooth Perturbations in Non-Reflexive Banach Spaces.
Smoothing metrics for measures on groups
Some applications of fractional calculus to operator semigroups and functional calculus
We survey some recent results on functional calculus for generators of holomorphic semigroups, which have been obtained using versions of fractional derivation of Riemann-Liouville or Weyl type. Such a calculus allows us to give tight estimates even in concrete L¹ examples.
Some conditions for a -semigroup to be asymptotically finite-dimensional.
Some ergodic theorems for commuting contractions
Some facts from descriptive set theory concerning essential spectra and applications
Let X be a separable Banach space and denote by 𝓛(X) (resp. 𝒦(ℂ)) the set of all bounded linear operators on X (resp. the set of all compact subsets of ℂ). We show that the maps from 𝓛(X) into 𝒦(ℂ) which assign to each element of 𝓛(X) its spectrum, approximate point spectrum, essential spectrum, Weyl essential spectrum, Browder essential spectrum, respectively, are Borel maps, where 𝓛(X) (resp. 𝒦(ℂ)) is endowed with the strong operator topology (resp. Hausdorff topology). This enables us...
Some Perturbation Results for Analytic Semigroups.
Some properties of strong Feller semigroups on L2-spaces.
Some Remarks on Inequalities of Landau and Kolmogorov.
Some remarks on time-dependent evolution systems in the hyperbolic case
Some Tauberian theorems related to operator theory
This article is a survey of some Tauberian theorems obtained recently in connection with work on asymptotic behaviour of semigroups of operators on Banach spaces. The results in operator theory are described in [6], where we made little attempt to show the Tauberian aspects. At the end of this article, we will give a sketch of the connections between the results in this article and in [6]; for details, the reader can turn to the original papers. In this article, we make no attempt to describe...
Sottospazi invarianti per operatori lineari T-invarianti rispetto ad un gruppo di omeomorfismi
Theory of -invariant linear operators which was considered for a group of congruences [2], [3] is now extended to a group of homeomorphisms. An analysis is carried out in order to establish to what extent the main results of the previous theory still hold under the actual very general assumptions.
Sous-groupes distingues du groupe unitaire et du groupe général linéaire d'un espace de Hilbert quaternionien.
Sous-groupes distingués du groupe unitaire et du groupe général linéaire d'un espace de Hilbert
Spectral inclusions and stability results for strongly continuous semigroups.
Spectral mapping theorems for exponentially bounded C-semigroups in Banach spaces.
Spectral properties of a type of integro-differential stiff problems
Spectral properties of cosine operator functions.