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We study some dynamical properties of skew products of H\'{e}non maps of $\mbb C^2$ that are fibered over a compact metric space $M$. The problem reduces to understanding the dynamical behavior of the composition of a pseudo-random sequence…

Dynamical Systems · Mathematics 2015-04-15 Ratna Pal , Kaushal Verma

A generalized attracting horseshoe is introduced as a new paradigm for describing chaotic strange attractors (of arbitrary finite rank) for smooth and piecewise smooth maps f from Q to Q, where Q is a homeomorph of the unit interval in real…

Dynamical Systems · Mathematics 2020-12-09 Yogesh Joshi , Denis Blackmore , Aminur Rahman

In this paper using approach of 1-D auxiliary maps we prove the existence of trapping domains containing attractors of the multidimensional Henon-like maps. For both of quadratic and cubic nonlinearities we obtain sufficient conditions of…

Dynamical Systems · Mathematics 2022-12-14 Dina A. Grechko , Vladimir N. Belykh , Nikita V. Barabash

In this work, we present a complete spectral study of a family of non-normal operators arising in Reggeon field theory. This family of operators is an original example who permit us to discover the recent theory of physical requirement of…

Mathematical Physics · Physics 2023-01-02 Abdelkader Intissar

We consider the family of singularly nonautonomous plate equation with structural damping \[ u_{tt} + a(t,x)u_{t} + (- \Delta) u_{t} + (-\Delta)^{2} u + \lambda u = f(u), \] in a bounded domain $\Omega \subset \R^n$, with Navier boundary…

We develop a general geometric method to establish the existence of positive Lyapunov exponents for a class of skew products. The technique is applied to show non-uniform hyperbolicity of some conservative partially hyperbolic…

Dynamical Systems · Mathematics 2020-04-02 Pablo D. Carrasco

We study the inverse scattering for Schr{\"o}dinger operators on locally perturbed periodic lattices. We show that the associated scattering matrix is equivalent to the Dirichlet-to-Neumann map for a boundary value problem on a finite part…

Spectral Theory · Mathematics 2018-11-14 Kazunori Ando , Hiroshi Isozaki , Hisashi Morioka

We give a new characterization of skew Hadamard matrices of size $n$ in terms of the data of the spectra of tournaments of size $n-2$.

Combinatorics · Mathematics 2012-02-27 Hiroshi Nozaki , Sho Suda

In a previous paper we considered a sequence of maps on a complete metric space $(X,d)$ and derived an extension of the Banach fixed point theorem. We showed that backward trajectories of maps $X\to X$ converge under mild conditions and…

Functional Analysis · Mathematics 2019-07-26 Nira Dyn , David Levin , Peter Massopust

In this paper we present a uniform way to derive families of maps from the corresponding differential equations describing systems which experience periodic kicks. The families depend on a single parameter - the order of a differential…

Chaotic Dynamics · Physics 2013-05-07 Mark Edelman

We develop direct and inverse scattering theory for one-dimensional Schroedinger operators with steplike potentials which are asymptotically close to different finite-gap periodic potentials on different half-axes. We give a complete…

Spectral Theory · Mathematics 2008-11-20 Anne Boutet de Monvel , Iryna Egorova , Gerald Teschl

We consider one-dimensional random Schr\"odinger operators with a background potential, arising in the inverse problem of scattering. We study the influence of the background potential on the essential spectrum of the random Schr\"odinger…

Mathematical Physics · Physics 2017-12-22 Hayk Asatryan , Werner Kirsch

We describe some asymptotic properties of trigonometric skew-product maps over irrational rotations of the circle. The limits are controlled using renormalization. The maps considered here arise in connection with the self-dual Hofstadter…

Mathematical Physics · Physics 2020-04-08 Hans Koch

The asymptotic attractors of a nonlinear dynamical system play a key role in the long-term physically observable behaviors of the system. The study of attractors and the search for distinct types of attractor have been a central task in…

Chaotic Dynamics · Physics 2017-04-14 Hai-Lin Zou , Zi-Chen Deng , Wei-Peng Hu , Kazuyuki Aihara , Ying-Cheng Lai

We study strange non-chaotic attractors in a class of quasiperiodically forced monotone interval maps known as pinched skew products. We prove that the probability of positive time-N Lyapunov exponents, with respect to the unique physical…

Dynamical Systems · Mathematics 2022-11-15 Flavia Remo , Gabriel Fuhrmann , Tobias Jäger

In this paper we study a two-parameter family of planar maps characterized by two distinct invariant subspaces. The model reveals the existence of two chaotic attractors within these subspaces. We identify parameter values at which these…

Chaotic Dynamics · Physics 2025-02-10 Fatemeh Helen Ghane , Marc Kesseböhmer

We introduce a new risk modeling framework where chaotic attractors shape the geometry of Bayesian inference. By combining heavy-tailed priors with Lorenz and Rossler dynamics, the models naturally generate volatility clustering, fat tails,…

Risk Management · Quantitative Finance 2025-09-11 Crystal Rust

A generalization of the Lorenz equations is proposed where the variables take values in a Lie algebra. The finite dimensionality of the representation encodes the quantum fluctuations, while the non-linear nature of the equations can…

Chaotic Dynamics · Physics 2014-05-01 J. Tranchida , P. Thibaudeau , S. Nicolis

We study the non-wandering set of contracting Lorenz maps. We show that if such a map $f$ doesn't have any attracting periodic orbit, then there is a unique topological attractor. Precisely, there is a compact set $\Lambda$ such that…

Dynamical Systems · Mathematics 2016-12-02 Paulo Brandão

In this note, we study existence of the outgoing/incoming resolvents of repulsive Schr\"odinger operators which may not be essentially self-adjoint on the Schwartz space. Moreover, we recover the classical result: The repulsive…

Analysis of PDEs · Mathematics 2021-12-22 Kouichi Taira