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We study the non-autonomous weakly damped wave equation with subquintic growth condition on the nonlinearity. Our main focus is the class of Shatah--Struwe solutions, which satisfy the Strichartz estimates and are coincide with the class of…

Analysis of PDEs · Mathematics 2021-01-19 Jakub Banaśkiewicz , Piotr Kalita

We consider stochastic dynamics of lattice systems with finite local state space, possibly at low temperature, and possibly non-reversible. We assume the additional regularity properties on the dynamics: a) There is at least one stationary…

Probability · Mathematics 2017-09-04 Benedikt Jahnel , Christof Kuelske

We show that it is possible to devise a large class of skew--product dynamical systems which have strange nonchaotic attractors (SNAs): the dynamics is asymptotically on fractal attractors and the largest Lyapunov exponent is nonpositive.…

Chaotic Dynamics · Physics 2007-05-23 Surendra Singh Negi , Ramakrishna Ramaswamy

The asymptotically autonomous robustness of random attractors of stochastic fluid equations defined on \emph{bounded} domains has been considered in the literature. In this article, we initially consider this topic (almost surely and in…

Probability · Mathematics 2022-08-16 Renhai Wang , Kush Kinra , Manil T. Mohan

Chaotic phases in stochastic differential equations are characterized by two essential long-time dynamical features: a random attractor capturing asymptotic geometry and a Sinai-Ruelle-Bowen (SRB) measure describing statistical information.…

Dynamical Systems · Mathematics 2025-09-17 Chuchu Chen , Jialin Hong , Yibo Wang

The existence of a global attractor is proved for the skew-product semiflow induced by almost periodic Nicholson systems and new conditions are given for the existence of a unique almost periodic positive solution which exponentially…

Dynamical Systems · Mathematics 2024-02-01 Ana M. Sanz , Víctor M. Villarragut

We survey the theory of attractors of nonlinear Hamiltonian partial differential equations since its appearance in 1990. These are results on global attraction to stationary states, to solitons and to stationary orbits, on adiabatic…

Analysis of PDEs · Mathematics 2023-01-02 Andrew Comech , Alexander Komech , Elena Kopylova

The analysis of the long-term behavior of the mathematical model of a neural network constitutes a suitable framework to develop new tools for the dynamical description of nonautonomous state-dependent delay equations (SDDEs). The concept…

Dynamical Systems · Mathematics 2019-07-24 Cinzia Elia , Ismael Maroto , Carmen Núñez , Rafael Obaya

This is a survey of results on long time behavior and attractors for nonlinear Hamiltonian partial differential equations, considering the global attraction to stationary states, stationary orbits, and solitons, the adiabatic effective…

Mathematical Physics · Physics 2015-12-01 Alexander Komech

For a process U(t,s) acting on a one-parameter family of normed spaces, we present a notion of time-dependent attractor based only on the minimality with respect to the pullback attraction property. Such an attractor is shown to be…

Dynamical Systems · Mathematics 2012-09-27 Monica Conti , Vittorino Pata , Roger Temam

We show that for periodic non-autonomous discrete dynamical systems, even when a common fixed point for each of the autonomous associated dynamical systems is repeller, this fixed point can became a local attractor for the whole system,…

Dynamical Systems · Mathematics 2018-01-15 Anna Cima , Armengol Gasull , Víctor Mañosa

In this paper we obtain the continuity of attractors for nonlinear parabolic equations with nonlinear boundary conditions when the boundary of the domain varies very rapidly as a parameter $\epsilon$ goes to zero. We consider the case where…

Analysis of PDEs · Mathematics 2024-06-05 Gleiciane S. Aragão , José M. Arrieta , Simone M. Bruschi

In this paper a family of non-autonomous scalar parabolic PDEs over a general compact and connected flow is considered. The existence or not of a neighbourhood of zero where the problems are linear has an influence on the methods used and…

Dynamical Systems · Mathematics 2021-03-22 Rafael Obaya , Ana Sanz

Numerical methods for stochastic differential equations with non-globally Lipschitz coefficients are currently studied intensively. This article gives an overview of our work for the case that the drift coefficient is potentially…

Numerical Analysis · Mathematics 2021-04-26 Michaela Szölgyenyi

We deal with backward stochastic differential equations with time delayed generators. In this new type of equations, a generator at time t can depend on the values of a solution in the past, weighted with a time delay function for instance…

Probability · Mathematics 2010-05-27 Łukasz Delong , Peter Imkeller

Global random attractors and random point attractors for random dynamical systems have been studied for several decades. Here we introduce two intermediate concepts: $\Delta$-attractors are characterized by attracting all deterministic…

Dynamical Systems · Mathematics 2017-08-30 Michael Scheutzow , Maite Wilke-Berenguer

Partial differential equations with discrete (concentrated) state-dependent delays are studied. The existence and uniqueness of solutions with initial data from a wider linear space is proven first and then a subset of the space of…

Analysis of PDEs · Mathematics 2010-11-11 Alexander V. Rezounenko , Petr Zagalak

We examine the effects of symmetry--preserving and breaking interactions in a drive--response system where the response has an invariant symmetry in the absence of the drive. Subsequent to the onset of generalized synchronization, we find…

Chaotic Dynamics · Physics 2015-06-15 Manish Agrawal , Awadhesh Prasad , Ram Ramaswamy

In this paper, we study the long-time behaviour of solutions of Cauchy problem for the parabolic $p$-Laplacian equation with variable coefficients. Under mild conditions on the coefficient of the principal part and without upper growth…

Analysis of PDEs · Mathematics 2012-04-11 Pelin Geredeli , Azer Khanmamedov

In this article we study the asymptotic behavior of solutions, in sense of global pullback attractors, of the evolution system $$ \begin{cases} u_{tt} +\eta\Delta^2 u+a(t)\Delta\theta=f(t,u), & t>\tau,\ x\in\Omega,\\ \theta_t-\kappa\Delta…

Analysis of PDEs · Mathematics 2016-09-05 Flank D. M. Bezerra , Vera L. Carbone , Marcelo J. D. Nascimento , Karina Schiabel
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