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Published in 2020 at "Mathematical Methods in the Applied Sciences"
DOI: 10.1002/mma.7051
Abstract: The aim of this work is to present a new approach to study weighted pseudo almost periodic functions with infinite delay using the measure theory. We study the existence and uniqueness of (μ, ν)‐pseudo almost periodic…
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Keywords:
periodic solutions;
solutions infinite;
infinite class;
almost periodic ... See more keywords
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Published in 2018 at "Mediterranean Journal of Mathematics"
DOI: 10.1007/s00009-018-1191-z
Abstract: In this paper, we investigate a coupled system of two Korteweg-de Vries equations on a bounded domain. We discuss the long-time behavior of this system with forces on the left Dirichlet boundary conditions. We obtain…
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Keywords:
periodic almost;
system;
system two;
almost periodic ... See more keywords
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Published in 2019 at "Communications in Mathematical Physics"
DOI: 10.1007/s00220-019-03329-3
Abstract: We consider the family of operators $${H^{(\varepsilon)}:=-\frac{d^2}{dx^2}+\varepsilon V}$$H(ε):=-d2dx2+εV in $${\mathbb{R}}$$R with almost-periodic potential V. We study the behaviour of the integrated density of states (IDS) $${N(H^{(\varepsilon)};\lambda)}$$N(H(ε);λ) when $${\varepsilon\to 0}$$ε→0 and $${\lambda}$$λ is a fixed energy.…
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Keywords:
theory almost;
varepsilon;
perturbation theory;
almost periodic ... See more keywords
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Published in 2020 at "Communications in Mathematical Physics"
DOI: 10.1007/s00220-020-03741-0
Abstract: We study dynamical properties of the billiard flow on convex polyhedra away from a neighbourhood of the non-smooth part of the boundary, called “pockets”. We prove there are only finitely many immersed periodic tubes missing…
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Keywords:
control;
almost periodic;
polyhedral billiards;
concentration ... See more keywords
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Published in 2018 at "Journal of Nonlinear Science"
DOI: 10.1007/s00332-018-9467-9
Abstract: In this paper, we are concerned with the existence of invariant tori in nearly integrable Hamiltonian systems $$\begin{aligned} H=h(y)+f(x,y,t), \end{aligned}$$H=h(y)+f(x,y,t),where $$y\in D\subseteq \mathbb {R}^n$$y∈D⊆Rn with D being an open bounded domain, $$x\in \mathbb {T}^n$$x∈Tn, f(x, y, t)…
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Keywords:
persistence invariant;
almost periodic;
mathbb;
hamiltonian systems ... See more keywords
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Published in 2017 at "Journal of Mathematical Chemistry"
DOI: 10.1007/s10910-017-0805-1
Abstract: In this paper an impulsive model for the dynamics of competitive Lotka–Volterra systems using the Caputo fractional-order derivative is developed. The existence and uniqueness of almost periodic solutions are investigated. Applying the fractional Lyapunov method,…
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Keywords:
competitive systems;
fractional order;
almost periodic;
periodic processes ... See more keywords
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Published in 2017 at "Journal of Mathematical Sciences"
DOI: 10.1007/s10958-017-3305-8
Abstract: We establish conditions for the existence of almost periodic solutions of linear and nonlinear almost periodic functional equations without using the -classes of these equations.
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Keywords:
almost periodic;
functional equations;
periodic solutions;
solutions functional ... See more keywords
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Published in 2017 at "Neural Processing Letters"
DOI: 10.1007/s11063-017-9620-8
Abstract: A competitive neural network model was proposed to describe the dynamics of cortical maps in which, there exist two memories: long-term and short-term. In this paper, we investigate the existence and the exponential stability of…
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Keywords:
periodic solution;
time space;
time;
almost periodic ... See more keywords
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Published in 2018 at "Neural Processing Letters"
DOI: 10.1007/s11063-018-9857-x
Abstract: This paper considers the exponential stability of pseudo almost periodic solutions for a class of fuzzy cellular neural networks with time-varying delays. Based on differential inequality techniques and by constructing suitable Lyapunov function, we achieve…
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Keywords:
stability pseudo;
periodic solutions;
almost periodic;
pseudo almost ... See more keywords
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Published in 2017 at "Ukrainian Mathematical Journal"
DOI: 10.1007/s11253-017-1320-z
Abstract: We study the existence and asymptotic stability of piecewise continuous almost periodic solutions for systems of differential equations with delay and nonfixed times of impulsive actions that can be regarded as mathematical models of neural…
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Keywords:
periodic solutions;
solutions systems;
delay nonfixed;
times impulsive ... See more keywords
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Published in 2017 at "Ukrainian Mathematical Journal"
DOI: 10.1007/s11253-017-1404-9
Abstract: The Favard–Amerio theory is constructed for almost periodic functional-differential equations in Banach spaces without using the ℋ-classes of these equations. For linear equations, we present the first example of an almost periodic operator, which has…
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Keywords:
almost periodic;
periodic functional;
amerio theory;
favard amerio ... See more keywords