Scattering theory for quantum dynamical semigroups. — II
Schrödinger operators with form-bounded potentials in -spaces
Second order evolution equations with parameter
We give some theorems on continuity and differentiability with respect to (h,t) of the solution of a second order evolution problem with parameter . Our main tool is the theory of strongly continuous cosine families of linear operators in Banach spaces.
Second order incomplete expiring Cauchy problems.
Semiflows and semigroups
Given a compact Hausdorff space and a strongly continuous semigroup of linear isometries of the Banach space of all complex-valued, continuous functions on , the semiflow induced by on is investigated. In the particular case in which is a compact, connected, differentiable manifold, a class of semigroups preserving the differentiable structure of is characterized.
Semi-Fredholm operators and semigroups associated with some classical operator ideals
Semigroup Analysis of Structured Parasite Populations
Motivated by structured parasite populations in aquaculture we consider a class of size-structured population models, where individuals may be recruited into the population with distributed states at birth. The mathematical model which describes the evolution of such a population is a first-order nonlinear partial integro-differential equation of hyperbolic type. First, we use positive perturbation arguments and utilise results from the spectral...
Semigroup approach to semilinear partial functional differential equations with infinite delay.
Semigroup commutators under differences.
Semigroup commutators under differences (II).
This is the second instalment of my previous paper with the same title, [1]. This paper consists of two different parts. The first part is devoted to improvements of the results developed in [1]. These improvements are described in section 0.1 below and developed in sections 1 to 5, and 9 to 10; they are in fact technically distinct from [1] and rely on a systematic use of microlocalisation in the context of Hörmander-Weyl calculus. These paragraphs can therefore be read quite independently from...
Semigroup formulation and approximation of a linear age-dependent population problem with spatial diffusion.
Semi-group methods in stochastic control
Semi-groupes de contractions de classe de l’espace de Hilbert
Semigroupes de contractions linéaires sur C(X) : irrédductibilité et théorèmes de convergence.
Semi-groupes de Feller invariants sur les espaces homogènes non moyennables.
Semi-groupes de Feller invariants sur les espaces hyperboliques
Semi-groupes d'opérateurs invariants et opérateurs dissipatifs invariants
Soit un espace riemannien symétrique et l’espace des fonctions continues sur tendant vers 0 à l’infini. On démontre qu’un opérateur , invariant par les isométries de , engendre un semi-groupe fortement continu de contractions sur s’il est dissipatif et si son domaine contient les fonctions de classe à support compact.
Semi-groupes d'opérateurs sur un convexe compact et calcul de perturbations
Semi-groupes holomorphes et -convexité
Semi-groupes holomorphes et -convexité (suite)