Results 11 to 20 of about 1,064,326 (320)

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   +3 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

On the existence of almost periodic solutions of neutral functional differential equations [PDF]

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 1998
This paper discusses the existence of almost periodic solutions of neutral functional differential equations. Using a Liapunov function and the Razumikhin's technique, we obtain the existence, uniqueness and stability of almost periodic solutions.
J. Xu, Zicheng Wang, Z. Zheng
doaj   +3 more sources

Almost periodic solutions for an asymmetric oscillation [PDF]

open access: yes, 2017
In this paper we study the dynamical behaviour of the differential equation \begin{equation*} x''+ax^+ -bx^-=f(t), \end{equation*} where $x^+=\max\{x,0\}$,\ $x^-=\max\{-x,0\}$, $a$ and $b$ are two different positive constants, $f(t)$ is a real analytic ...
Huang, Peng, Li, Xiong, Liu, Bin
core   +3 more sources

A Lyapunov-Based Analysis on the Almost Periodicity of Impulsive Conformable Reaction–Diffusion Neural Networks with Distributed Delays [PDF]

open access: yesEntropy
The focus of this research is the qualitative behavior of a reaction–diffusion neural network with distributed delays and conformable derivatives under impulsive perturbations.
Ivanka Stamova   +2 more
doaj   +2 more sources

Almost periodic functions in terms of Bohr’s equivalence relation [PDF]

open access: yesThe Ramanujan journal, 2017
In this paper we introduce an equivalence relation on the classes of almost periodic functions of a real or complex variable which is used to refine Bochner’s result that characterizes these spaces of functions.
Sepulcre, Juan Matias, Vidal, Tomás
core   +4 more sources

δ-Almost Periodic Functions and Applications to Dynamic Equations

open access: yesMathematics, 2019
In this paper, by employing matched spaces for time scales, we introduce a δ -almost periodic function and obtain some related properties. Also the hull equation for homogeneous dynamic equation is introduced and results of the existence are ...
Chao Wang   +2 more
doaj   +2 more sources

Harmonic analysis of functions almost periodic at infinity in Banach modules [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2021
The article is devoted to homogeneous spaces of functions defined on a locally compact Abelian group and with their values in a complex Banach space.
Strukova, Irina Igorevna
doaj   +1 more source

The research of some classes of almost periodic at infinity functions [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2021
The article under consideration is devoted to continuous almost periodic at infinity functions defined on the whole real axis and with their values in a complex Banach space.
Vysotskaya, Irina A.   +1 more
doaj   +1 more source

Almost periodic quasi-projective synchronization of delayed fractional-order quaternion-valued neural networks

open access: yesNeural Networks, 2023
This paper examines the issue of almost periodic quasi-projective synchronization of delayed fractional-order quaternion-valued neural networks. First, using a direct method rather than decomposing the fractional quaternion-valued system into four ...
Xiaofang Meng, Zhouhong Li, Jinde Cao
semanticscholar   +1 more source

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