Spectral Representation of Local Semigroups.
Spectral representation of local semigroups in locally convex spaces
Spectrality Criteria for Unbounded Operators with Real Spectrum.
Square functions, bounded analytic semigroups, and applications
To any bounded analytic semigroup on Hilbert space or on -space, one may associate natural ’square functions’. In this survey paper, we review old and recent results on these square functions, as well as some extensions to various classes of Banach spaces, including noncommutative -spaces, Banach lattices, and their subspaces. We give some applications to functional calculus, similarity problems, multiplier theory, and control theory.
Stabilität starkstetiger, positiver Operatorhalbgruppen auf C*-Algebren.
Stability and ergodicity of dominated semigroups. II. The strong case.
Stability and spectra of C0-semigroups.
Stability of operator semigroups: ideas and results
Stability of strongly continuous representations of abelian semigroups.
Stability on coupling SIR epidemic models with vaccination.
Stark stetige Halbgruppen und Gruppen als Lösungen von Cauchy-Problemen in der Mathematischen Physik.
Stieltjes vectors and cosine functions generators
Störungskriterien im reflexiven Banachraum.
Strong continuity of semigroup homomorphisms
Let J be an abelian topological semigroup and C a subset of a Banach space X. Let L(X) be the space of bounded linear operators on X and Lip(C) the space of Lipschitz functions ⨍: C → C. We exhibit a large class of semigroups J for which every weakly continuous semigroup homomorphism T: J → L(X) is necessarily strongly continuous. Similar results are obtained for weakly continuous homomorphisms T: J → Lip(C) and for strongly measurable homomorphisms T: J → L(X).
Structural properties and limit behaviour of linear stochastic systems in Hilbert spaces
Structured Populations, Linear Semigrous and Positivity.
Study of a complete abstract differential equation of elliptic type with variable operator coefficients, I.
Su un ampliamento della teorìa degli operatori lineari invarianti rispetto ad un gruppo di congruenze
Let be an open subset of , the linear space of -vector valued functions defined on , a group of orthogonal matrices mapping onto itself and a linear representation of order of . A suitable group of linear operators of is introduced which leads to a general definition of -invariant linear operator with respect to . When is a finite group, projection operators are explicitly obtained which define a "maximal" decomposition of the function space into a direct sum of subspaces...
Sur la théorie de Littlewood-Paley-Stein, d'après Coifman-Rochberg-Weiss et Cowling
Sur l'approximation des réduites