Results 1 to 10 of about 54 (30)

On the Gevrey ultradifferentiability of weak solutions of an abstract evolution equation with a scalar type spectral operator on the real axis

open access: yesOpen Mathematics, 2020
Given the abstract evolution equation y′(t)=Ay(t),t∈ℝ,y^{\prime} (t)=Ay(t),t\in {\mathbb{R}}, with a scalar type spectral operator A in a complex Banach space, we find conditions on A, formulated exclusively in terms of the location of its spectrum in ...
Markin Marat V.
doaj   +2 more sources

Multiplicative perturbations of local C-cosine functions [PDF]

open access: yes, 2021
We establish some left and right multiplicative perturbations of a local C-cosine function C(·) on a complex Banach space X with non-densely defined generator, which can be applied to obtain some new additive perturbation results concerning C ...
KUO, Chung-Cheng, YEH, Nai-Sher
core   +2 more sources

Stability analysis in continuous and discrete time, using the Cayley transform [PDF]

open access: yes, 2010
For semigroups and for bounded operators we introduce the new notion of Bergman distance. Systems with a finite Bergman distance share the same stability properties, and the Bergman distance is preserved under the Cayley transform.
Besseling, Niels, Zwart, Hans
core   +5 more sources

Perturbations of local C-cosine functions [PDF]

open access: yes, 2020
We show that A+B is a closed subgenerator of a local C-cosine function T (·) on a complex Banach space X defined by ∞ t T (t)x = \u27\" Bn n=0 0 jn−1 (s)jn(t − s)C(|t − 2s|)xds for all x ∈ X and 0 ≤ t < T0, if A is a closed subgenerator of a local C ...
KUO, Chung-Cheng
core   +2 more sources

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>
Pogan, Alin   +2 more
core   +1 more source

Comments on the Chernoff √ n-Lemma [PDF]

open access: yes, 2016
Dedicated to Pavel Exner on the occasion of his 70th anniversary.International audienceThe Chernoff √ n-Lemma is revised. This concerns two aspects: an improvement of the Chernoff estimate in the strong operator topol-ogy and an operator-norm estimate ...
Zagrebnov, Valentin
core   +2 more sources

C0‐continuity of the Fröbenius‐Perron semigroup

open access: yesInternational Journal of Mathematics and Mathematical Sciences, Volume 31, Issue 5, Page 307-319, 2002., 2002
We consider the Fröbenius‐Perron semigroup of linear operators associated to a semidynamical system defined in a topological space X endowed with a finite or a σ‐finite regular measure. We prove that if there exists a faithful invariant measure for the semidynamical system, then the Fröbenius‐Perron semigroup of linear operators is C0‐continuous in the
Andrés Navas, Sergio Plaza
wiley   +1 more source

Almost Periodic Solutions of C-well-posed Evolution Equations [PDF]

open access: yes, 2006
This paper is concerned with the existence and uniqueness of almost periodic mild solutions of evolution equations of the form u(t) = Au(t) + ƒ(t) where A is the generator of a holomorphic Csemigroup on a Banach space and ƒ is an almost periodic function.
Minh, Nguyen Van
core   +1 more source

Solving Becker’s Problem on Periodic Solutions of Parabolic Evolution Equations

open access: yesAdvanced Nonlinear Studies, 2018
We present existence and multiplicity theorems for periodic mild solutions to parabolic evolution equations. Their peculiarity is a link with the spectrum of the generator of the semigroup rather than with the spectrum of the linearized periodic BVP for ...
Vidossich Giovanni
doaj   +1 more source

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