Results 21 to 30 of about 3,328,865 (187)

The Perron Problem for C-Semigroups [PDF]

open access: yes, 2004
<p>Characterizations of Perron-type for the exponential stability of exponentially bounded C-semigroups are given. Also, some applications for the asymptotic behavior of the integrated semigroups are obtained.</p>
Prada, Petre   +2 more
core   +1 more source

SEMIGROUPS N TIMES INTEGRATED AND AN APPLICATION TO A PROBLEM OF CAUCHY TYPE

open access: yesSelecciones Matemáticas, 2016
The theory of semigroups n times integrated is a generalization of strongly continuous semigroups, which was developed from 1984, and is widely used for the study of the existence and uniqueness of problems such Cauchy in which the operator domain is ...
Danessa Chirinos Fernández   +1 more
doaj   +1 more source

The Critical Spectrum of a Strongly Continuous Semigroup

open access: yesAdvances in Mathematics, 2000
\textit{A. Lyapunov} showed in [``General problem of the stability of motion'' (Russian), Charkov (1892; JFM 24.0876.02); French translation in Ann. Fac. Sci. Toulouse Sci. Math. Sci. Phys. (2) 9, 203-474 (1907; JFM 38.0738.07)] that the asymptotic behavior as \(t \to \infty\) of the exponential function \(\exp[tA]\) for a matrix \(A\) can be described
Nagel, Rainer, Poland, Jan
openaire   +1 more source

Exponential dichotomy of strongly discontinuous semigroups [PDF]

open access: yesBulletin of the Australian Mathematical Society, 1984
In this paper we give necessary and sufficient conditions for exponential dichotomy of a general class of strongly continuous semigroups of operators defined on a Banach space. As a particular case we obtain a Datko theorem for exponential stability of a strongly continuous semigroup of class C0 defined on a Banach space.
Preda, P., Megan, M.
openaire   +2 more sources

Particular case of operator calculus for generalized functions with supports in cone

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2012
In this work the construction of functional calculus for strongly continuous semigroups of operators in Schwartz distribution algebra on some cone is generalized.
A. V. Solomko
doaj   +1 more source

On the global existence of mild solutions of nonlinear delay systems associated with continuous and analytic semigroups

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2008
In this paper we prove sufficient conditions for the existence of global solutions of nonlinear functional-differential evolution equations whose linear parts are infinitesimal generators of strongly continuous and analytic semigroups.
Milan Medved
doaj   +1 more source

A photon transport problem with a time-dependent point source [PDF]

open access: yes, 2009
We consider a time-dependent problem of photon transport in an interstellar cloud with a point photon source modeled by a Dirac δ functional. The existence of a unique distributional solution to this problem is established by using the theory of ...
McBride, A.C.   +2 more
core   +3 more sources

On equicontinuity and tightness of bi-continuous semigroups [PDF]

open access: yes, 2022
In contrast to classical strongly continuous semigroups, the study of bi-continuous semigroups comes with some freedom in the properties of the associated locally convex topology.
Schwenninger, Felix L.; id_orcid   +6 more
core   +2 more sources

Common fixed points of one-parameter nonexpansive semigroups in strictly convex Banach spaces

open access: yesAbstract and Applied Analysis, 2006
One of our main results is the following convergence theorem for one-parameter nonexpansive semigroups: let C be a bounded closed convex subset of a Hilbert space E, and let {T(t):t∈ℝ+} be a strongly continuous semigroup of nonexpansive mappings on C ...
Tomonari Suzuki
doaj   +2 more sources

Existence of Mild Solutions for Fuzzy Fractional Evolution Equations via Krasnosel’skii Fixed Point Theorem [PDF]

open access: yesSahand Communications in Mathematical Analysis
The primary purpose of this paper is to investigate the existence of two distinct types of fuzzy mild solutions for fuzzy fractional evolution equations under Caputo's $gH-$differentiability.
Ismail Airou   +2 more
doaj   +1 more source

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