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Almost periodic processes and the existence of almost periodic solutions [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 1998
Some property which is equivalent to the concept of an asymptotically almost periodic integral for almost periodic processes is introduced. By using this property, it is shown that a precompact integral of almost periodic processes which is uniformly ...
Y. Hino, Satoru Murakami
doaj   +4 more sources

Almost periodic and asymptotically almost periodic functions: part I [PDF]

open access: yesAdvances in Difference Equations, 2018
In this paper, we review indispensable properties and characterizations of almost periodic functions and asymptotically almost periodic functions in Banach spaces.
Dhaou Lassoued, Rahim Shah, Tongxing Li
doaj   +2 more sources

Almost Periodic and Asymptotically Almost Periodic Solutions of Liénard Equations [PDF]

open access: yesDiscrete & Continuous Dynamical Systems - B, 2011
The aim of this paper is to study the almost periodic and asymptotically almost periodic solutions on (0,+1) of the Li´enard equation x′′ + f(x)x′ + g(x) = F(t), where F : T !
B. A. Shcherbakov   +16 more
core   +4 more sources

Almost Periodic Time Scales and Almost Periodic Functions on Time Scales [PDF]

open access: yesJournal of Applied Mathematics, 2015
We propose some new concepts of almost periodic time scales and almost periodic functions on time scales and give some basic properties of these new types of almost periodic time scales and almost periodic functions on time scales.
Yongkun Li, Bing Li
doaj   +3 more sources

Almost periodic functions on Hausdorff almost periodic time scales

open access: yesAdvances in Difference Equations, 2017
This paper is devoted to generalizing the notion of almost periodic functions on time scales. We introduce a new class of almost periodic time scales called Hausdorff almost periodic time scales by using the Hausdorff distance and propose a more general ...
Desheng Ji, Liu Yang, Jimin Zhang
doaj   +2 more sources

Weakly Almost Periodic Flows [PDF]

open access: yesTransactions of the American Mathematical Society, 1989
The notion of the enveloping semigroup of a flow is applied to some situations in ergodic theory. In particular, weakly almost periodic functions on groups are studied and Moore’s ergodic theorem is proved.
Ellis, R., Nerurkar, M.
openaire   +2 more sources

Almost periodic functions, constructively [PDF]

open access: yesLogical Methods in Computer Science, 2005
The almost periodic functions form a natural example of a non-separable normed space. As such, it has been a challenge for constructive mathematicians to find a natural treatment of them.
Bas Spitters
doaj   +1 more source

Investigation for periodic and almost periodic solutions of first-order ordinary differential equations [PDF]

open access: yesE3S Web of Conferences, 2023
Approaches to estimating for the number of periodic and almost periodic solutions of ordinary differential equations are considered. Conditions that allow determinating both the upper and lower bounds for these solutions are found.
Alferov G., Ivanov G., Korolev V.
doaj   +1 more source

On the connection between Sp-almost periodic functions defined on time scales and ℝ

open access: yesOpen Mathematics, 2022
It is well known that a sufficient and necessary condition for a continuous function gg to be almost periodic on time scale T{\mathbb{T}} is the existence of an almost periodic function ff on R{\mathbb{R}} such that ff is an extension of gg.
Yang Hao, Li Hong-Xu
doaj   +1 more source

Holomorphic semi-almost periodic functions [PDF]

open access: yes, 2009
We study the Banach algebras of bounded holomorphic functions on the unit disk whose boundary values, having, in a sense, the weakest possible discontinuities, belong to the algebra of semi-almost periodic functions on the unit circle. The latter algebra
Brudnyi, A., Kinzebulatov, D.
core   +2 more sources

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