Results 11 to 20 of about 18,096 (200)

New interpolation spaces and strict Hölder regularity for fractional abstract Cauchy problem

open access: yesBoundary Value Problems, 2021
We know that interpolation spaces in terms of analytic semigroup have a significant role into the study of strict Hölder regularity of solutions of classical abstract Cauchy problem (ACP).
Md Mansur Alam   +2 more
doaj   +1 more source

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   +3 more sources

Existence of Pseudo Almost Periodic Solutions to Some Classes of Partial Hyperbolic Evolution Equations [PDF]

open access: yes, 2006
The paper examines the existence of pseudo almost periodic solutions to some classes of partial hyperbolic evolution equations. Namely, sufficient conditions for the existence and uniqueness of pseudo almost periodic solutions to those classes of ...
Diagana, Toka
core   +4 more sources

Anti-periodic problems for semilinear partial neutral evolution equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2013
We study the anti-periodic problem for the semilinear partial neutral evolution equation in the form \begin{equation*} \begin{array}{l}\displaystyle\frac{d}{dt}[u(t)+h(t,u(t))]+Au(t)=f(t,u(t)),\quad t\in \mathbb{R} \end{array} \end{equation*} in a Banach
Rong-Nian Wang, De-Han Chen
doaj   +1 more source

On continuity of solutions for parabolic control systems and input-to-state stability [PDF]

open access: yes, 2018
We study minimal conditions under which mild solutions of linear evolutionary control systems are continuous for arbitrary bounded input functions.
Jacob, Birgit   +2 more
core   +4 more sources

Quasianalyticity and Semigroups [PDF]

open access: yesBulletin of the American Mathematical Society, 1972
This chapter contains a development for linear semigroups which is of interest in the theory of probability and other areas.
openaire   +3 more sources

The structure of an isometric tuple [PDF]

open access: yes, 2011
An $n$-tuple of operators $(V_1,...,V_n)$ acting on a Hilbert space $H$ is said to be isometric if the operator $[V_1\...\ V_n]:H^n\to H$ is an isometry. We prove a decomposition for an isometric tuple of operators that generalizes the classical Lebesgue-
Kennedy, Matthew
core   +1 more source

Analyticity and quasi-analyticity for one-parameter semigroups [PDF]

open access: yesProceedings of the American Mathematical Society, 1970
Suppose that T is a strongly continuous (even at 0) one-parameter semigroup of bounded linear transformations on a real Banach space S and T has generator A. THEOREM A. If lim supx.o [ T(x) -I 0. Suppose { q } is a sequence of positive numbers convergent to 0 and each of N(q), q= 1, 2, * * is an increasing sequence of positive integers.
openaire   +2 more sources

The formal Laplace-Borel transform of Fliess operators and the composition product

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
The formal Laplace-Borel transform of an analytic integral operator, known as a Fliess operator, is defined and developed. Then, in conjunction with the composition product over formal power series, the formal Laplace-Borel transform is shown to provide ...
Yaqin Li, W. Steven Gray
doaj   +1 more source

Existence and regularity of periodic solutions for neutral evolution equations with delays

open access: yesAdvances in Difference Equations, 2019
The aim of this paper is to study the periodic problem for neutral evolution equation (u(t)−G(t,u(t−ξ)))′+Au(t)=F(t,u(t),u(t−τ)),t∈R, $$ \bigl(u(t)-G\bigl(t,u(t-\xi )\bigr)\bigr)'+Au(t)=F \bigl(t,u(t),u(t-\tau )\bigr), \quad t\in \mathbb{R}, $$ in a ...
Qiang Li, Huanhuan Zhang
doaj   +1 more source

Home - About - Disclaimer - Privacy