Results 1 to 10 of about 2,572,519 (223)

On measuring unboundedness of the $H^\infty$-calculus for generators of analytic semigroups [PDF]

open access: yes, 2016
We investigate the boundedness of the $H^\infty$-calculus by estimating the bound $b(\varepsilon)$ of the mapping $H^{\infty}\rightarrow \mathcal{B}(X)$: $f\mapsto f(A)T(\varepsilon)$ for $\varepsilon$ near zero.
Schwenninger, Felix
core   +5 more sources

Strong q-variation inequalities for analytic semigroups [PDF]

open access: yes, 2010
Let T : Lp --> Lp be a positive contraction, with p strictly between 1 and infinity. Assume that T is analytic, that is, there exists a constant K such that \norm{T^n-T^{n-1}} < K/n for any positive integer n.
Christian, Le Merdy, Quanhua, Xu
core   +5 more sources

Semigroups of Composition Operators in Analytic Morrey Spaces [PDF]

open access: yesIntegral Equations and Operator Theory, 2020
Analytic Morrey spaces belong to the class of function spaces which, like BMOA, are defined in terms of the degree of oscillation on the boundary of functions analytic in the unit disc. We consider semigroups of composition operators on these spaces and focus on the question of strong continuity. It is shown that these semigroups behave like on BMOA.
Petros Galanopoulos   +2 more
openaire   +5 more sources

Functional calculus for generators of analytic semigroups of operators

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
We construct a functional calculus for generators of one-parameter bounded analytic semigroups of operators on a Banach space. The calculus symbol class consist of the Laplace image of the convolution algebra $\cal S'_+$ of tempered distributions with ...
O. V. Lopushansky, S. V. Sharyn
doaj   +2 more sources

Gaussian estimates for a heat equation on a network

open access: yesNetworks and Heterogeneous Media, 2006
We consider a diffusion problem on a network on whose nodes we impose Dirichlet and generalized, non-local Kirchhoff-type conditions. We prove well-posedness of the associated initial value problem, and we exploit the theory of sub-Markovian and ...
Delio Mugnolo
doaj   +3 more sources

Continuous maximal regularity and analytic semigroups [PDF]

open access: yes, 2011
In this paper we establish a result regarding the connection between continuous maximal regularity and generation of analytic semigroups on a pair of densely embedded Banach spaces. More precisely, we show that continuous maximal regularity for a closed operator $A$ : $E_1 \to E_0$ implies that $A$ generates a strongly continuous analytic semigroup
LeCrone, Jeremy, Simonett, Gieri
semanticscholar   +4 more sources

Integrodifferential equations with analytic semigroups

open access: yesInternational Journal of Stochastic Analysis, 2001
In this paper we study a class of integrodifferential equations considered in an arbitrary Banach space. Using the theory of analytic semigroups we establish the existence, uniqueness, regularity and continuation of solutions to these integrodifferential equations.
D. Bahuguna
openaire   +3 more sources

Analyticity of sub-Markovian semigroups [PDF]

open access: yesProceedings of the American Mathematical Society, 1995
Summary: Let \(A\) be a generator of a submarkovian semigroup in \(L^2(M, d\mu)\). We investigate the domain of analyticity of \(\exp(- tA)\) in \(L^p(M, d\mu)\). The same problem for the generator perturbed by a potential is considered.
Liskevich, V. A., Perelmuter, M. A.
openaire   +2 more sources

A Class of Semilinear Parabolic Problems and Analytic Semigroups

open access: yesMathematics, 2022
(1) Background: This paper is devoted to the study of a class of semilinear initial boundary value problems of parabolic type. (2) Methods: We make use of fractional powers of analytic semigroups and the interpolation theory of compact linear operators ...
Kazuaki Taira
doaj   +1 more source

Operator calculus on the class of Sato’s hyperfunctions

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
We construct a functional calculus for generators of analytic semigroups of operators on a Banach space. The symbol class of the calculus consists of hyperfunctions with a compact support in $[0,\infty)$.
M.I. Patra, S.V. Sharyn
doaj   +3 more sources

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