Results 61 to 70 of about 2,716 (225)
Attractors for 2D-Navier-Stokes models with delays [PDF]
, 2004 The existence of an attractor for a 2D-Navier-Stokes system with delay is proved. The theory of pullback attractors is successfully applied to obtain the results since the abstract functional framework considered turns out to be nonautonomous.
Caraballo Garrido, Tomás +1 more
core +1 more source
Financialization of Commodity Markets Co‐Movement Behind‐the‐Scenes
Journal of Futures Markets, Volume 45, Issue 12, Page 2457-2475, December 2025.ABSTRACT In the early 2000s, institutional investors entered the commodity futures markets en masse with passive, long only, index‐type positions in sharp contrast with those typically assumed by traditional expert participants. A heated public debate soon erupted over the perceived consequences of the phenomenon—commonly referred to as ...
Devraj Basu, Olivier Bauthéac
wiley +1 more source
Weak topologies for Carath\'eodory differential equations. Continuous dependence, exponential Dichotomy and attractors [PDF]
, 2018 We introduce new weak topologies and spaces of Carath\'eodory functions where the solutions of the ordinary differential equations depend continuously on the initial data and vector fields.
Longo, Iacopo P. +2 more
core +2 more sources
PAMM, Volume 25, Issue 4, December 2025.ABSTRACT The material point method (MPM) offers a distinct simulation method compared to conventional techniques such as the finite element method (FEM). In the MPM, physical bodies are represented by a collection of material points while the governing equations are solved on an independent computational mesh. Each simulation step follows a three‐stage
Marvin Koßler +2 more
wiley +1 more source
Pullback Attractors for 2D Navier-Stokes Equations with Delays and Their Regularity [PDF]
, 2013 In this paper we obtain some results on the existence of solution, and of pullback attractors, for a 2D Navier-Stokes model with finite delay studied in [4] and [6].
García Luengo, Julia María +2 more
core +1 more source
Random dynamics of fractional stochastic retarded FitzHugh–Nagumo systems on unbounded domains
Journal of Inequalities and ApplicationsIn this paper, we study the dynamics of fractional nonautonomous stochastic FitzHugh–Nagumo systems with variable delay defined on R n $\mathbb{R}^{n}$ .
Dongjie Gao
doaj +1 more source
Boundary representations of locally compact hyperbolic groups
Proceedings of the London Mathematical Society, Volume 131, Issue 6, December 2025.Abstract We develop the theory of Patterson–Sullivan measures for locally compact hyperbolic groups. This theory associates to certain left‐invariant metrics on the group measures on its boundary. Next, we establish irreducibility of the resulting (unitary) Koopman representations for second countable, nonelementary, unimodular locally compact ...
Michael Glasner
wiley +1 more source
PULLBACK AND FORWARD ATTRACTORS FOR A DAMPED WAVE EQUATION WITH DELAYS [PDF]
Stochastics and Dynamics, 2004 The existence of a pullback (and also a uniform forward) attractor is proved for a damped wave equation containing a delay forcing term which, in particular, covers the models of sine–Gordon type. The result follows from the existence of a compact set which is uniformly attracting for the two-parameter semigroup associated to the model.
Caraballo Garrido, Tomás +2 more
openaire +4 more sources
Asymptotic Behaviour of a Non-Autonomous Lorenz-84 System [PDF]
, 2014 The so called Lorenz-84 model has been used in climatological studies, for example by coupling it with a low-dimensional model for ocean dynamics. The behaviour of this model has been studied extensively since its introduction by Lorenz in 1984.
Anguiano Moreno, María +1 more
core +1 more source
Pullback attractors for a class of non-Newtonian micropolar fluids
Electronic Journal of Differential Equations, 2018 In this article we study the long time behavior of the two-dimensional flow for non-Newtonian micropolar fluids in bounded smooth domains, in the sense of pullback attractors.
Geraldo M. de Araujo +3 more
doaj