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We prove the existence of a compact random attractor for the stochastic Benjamin-Bona-Mahony Equation defined on an unbounded domain. This random attractor is invariant and attracts every pulled-back tempered random set under the forward…

Analysis of PDEs · Mathematics 2008-05-14 Bixiang Wang

Nontrivial infinitesimal bendings for a class of two-dimensional surfaces are constructed. The surfaces considered here are orientable; compact; with boundary; have positive curvature everywhere except at finitely many planar points; and…

Analysis of PDEs · Mathematics 2009-10-06 Abdelhamid Meziani

Divisible convex sets have long been important in the study of Hilbert geometries. When a divisible convex set is an ellipsoid, the Hilbert geometry it induces is the hyperbolic space. In general, strictly convex divisible domains exhibit…

Metric Geometry · Mathematics 2024-10-29 Amelia Pompilio

We present a multidimensional flow exhibiting a Rovella-like attractor: a transitive invariant set with a non-Lorenz-like singularity accumulated by regular orbits and a multidimensional non-uniformly expanding invariant direction.…

Dynamical Systems · Mathematics 2012-03-12 V. Araujo , A. Castro , M. J. Pacifico , V. Pinheiro

This paper studies the behavior of dynamical systems in non-compact spaces, specifically focusing on the concepts of global attractors and shadowing. Let $K$ be a compact global attractor. We show that the shadowing property holds in…

Dynamical Systems · Mathematics 2026-03-27 Gonzalo Cousillas , Jorge Groisman

We consider dynamical behavior of non-autonomous wave-type evolutionary equations with nonlinear damping, critical nonlinearity, and time-dependent external forcing which is translation bounded but not translation compact (i.e., external…

Dynamical Systems · Mathematics 2009-11-11 Chunyou Sun , Daomin Cao , Jinqiao Duan

We describe the statistical properties of the dynamics of the quadratic polynomials P_a(z):=e^{2\pi a i} z+z^2 on the complex plane, with a of high return times. In particular, we show that these maps are uniquely ergodic on their measure…

Dynamical Systems · Mathematics 2022-02-09 Artur Avila , Davoud Cheraghi

In this note, we give a motivic characterization of the integral cohomology of dual boundary complexes of smooth quasi-projective complex algebraic varieties. As a corollary, the dual boundary complex of any stably affine space (of positive…

Algebraic Geometry · Mathematics 2024-09-02 Tao Su

A toroidal set is a compactum $K \subseteq \mathbb{R}^3$ which has a neighbourhood basis of solid tori. We study the topological entropy of toroidal attractors $K$, bounding it from below in terms of purely topological properties of $K$. In…

Dynamical Systems · Mathematics 2024-03-28 P. Montealegre Macías , J. J. Sánchez-Gabites

The existence of a singularity by definition implies a preferred scale--the affine parameter distance from/to the singularity of a causal geodesic that is used to define it. However, this variable scale is also captured by the expansion…

General Relativity and Quantum Cosmology · Physics 2016-11-15 Claes Uggla

The term integrable asymptotically conformal at a point for a quasiconformal map defined on a domain is defined. Furthermore, we prove that there is a normal form for this kind attracting or repelling or super-attracting fixed point with…

Complex Variables · Mathematics 2020-06-02 Yunping Jiang

In this paper, we will show that a periodic nonlinear, time-varying dissipative system that is defined on a genus-p surface contains one or more invariant sets which act as attractors. Moreover, we shall generalize a result in [Martins,…

Dynamical Systems · Mathematics 2015-05-13 Yi Song , Stephen P. Banks

This article is devoted to a description of the dynamics of the phase flow of monotone contact Hamiltonian systems. Particular attention is paid to locating the maximal attractor (or repeller), which could be seen as the union of compact…

Dynamical Systems · Mathematics 2021-07-07 Liang Jin , Jun Yan

The classical approach to the study of dynamical systems consists in representing the dynamics of the system in the form of a "source-sink", that means identifying an attractor-repeller pair, which are attractor-repellent sets for all other…

Dynamical Systems · Mathematics 2022-10-18 Elena Nozdrinova , Olga Pochinka , Ekaterina Tsaplina

Positive curvature and bosons Compact positive curvature Riemannian manifolds M with symmetry group G allow Conner-Kobayashi reductions M to N, where N is the fixed point set of the symmetry G. The set N is a union of smaller-dimensional…

Mathematical Physics · Physics 2020-06-30 Oliver Knill

We consider hyperbolic projections of orbits of holomorphic self-maps of the unit disc, onto curves landing on the unit circle with a given angle. We show that under certain, necessary, assumptions, the projections exhibit monotonicity…

Complex Variables · Mathematics 2025-06-25 Argyrios Christodoulou , Konstantinos Zarvalis

Attractor-repeller decompositions of isolated invariant sets give rise to so-called connecting homomorphisms. These homomorphisms reveal information on the existence and structure of connecting trajectories of the underlying dynamical…

Dynamical Systems · Mathematics 2018-01-11 Axel Jänig

At low Reynolds numbers, the hydrodynamic interaction between dumbbells driven by an external rotating field can be attractive or repulsive. Dumbbells of dissimilar asymmetric shape or different coupling to the external field undergo…

Fluid Dynamics · Physics 2015-05-18 Steffen Schreiber , Thomas Fischer , Walter Zimmermann

We prove that the Euler characteristic of an even-dimensional compact manifold with positive (nonnegative) sectional curvature is positive (nonnegative) provided that the manifold admits an isometric action of a compact Lie group $G$ with…

Differential Geometry · Mathematics 2012-07-18 Thomas Puettmann , Catherine Searle

We discuss various issues related to the finite-dimensionality of the asymptotic dynamics of solutions of parabolic equations. In particular, we study the regularity of the vector field on the global attractor associated with these…

Analysis of PDEs · Mathematics 2010-08-31 Eleonora Pinto de Moura , James C. Robinson
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