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We prove that the two-sided limit shadowing property is among the strongest known notions of pseudo-orbit tracing. It implies shadowing, average shadowing, asymptotic average shadowing and specification properties. We also introduce a…

Dynamical Systems · Mathematics 2024-10-22 Bernardo Carvalho , Dominik Kwietniak

We provide several characterizations of the Lebesgue property for fuzzy metric spaces. It is known that a fuzzy metric space is Lebesgue if and only if every real-valued continuous function is uniformly continuous. Here we show that it…

General Topology · Mathematics 2021-09-30 Sugata Adhya , A. Deb Ray

The property of shadowing has been shown to be fundamental in both the theory of symbolic dynamics as well as continuous dynamical systems. A quintessential class of discontinuous dynamical systems are those driven by transitive piecewise…

Dynamical Systems · Mathematics 2025-02-10 Adarsh Bura , Chris Good , Tony Samuel

In this paper, we study the SRB measures of generalized horseshoe map. We prove that under the conditions of transversality and fatness, the SRB measure is actually absolutely continuous with respect to the Lebesgue measure.

Dynamical Systems · Mathematics 2021-08-31 Abbas Fakhari , Maryam Khalaj

Let $f\colon X\to X$ be a continuous function on a compact metric space. We show that shadowing is equivalent to backwards shadowing and two-sided shadowing when the map $f$ is onto. Using this we go on to show that, for expansive…

Dynamical Systems · Mathematics 2020-02-27 Chris Good , Sergio Macías , Jonathan Meddaugh , Joel Mitchell , Joe Thomas

This paper is dedicated to prove that the space of circle expanding maps of degree 2 preserving Lebesgue measure is an arc-connected space homeomorphic to an infinite-dimensional Lie group whose fundamental group is $\mathbb{Z}$. The…

Dynamical Systems · Mathematics 2023-05-23 Houssam Boukhecham , Hamza Ounesli

Recently, a new geometric approach which is called the fixed-circle problem has been gained to fixed-point theory. The problem is introduced and studied using different techniques on metric spaces. In this paper, we consider the…

Metric Geometry · Mathematics 2025-06-09 Nihal Yilmaz Özgür , Nihal Taş

We study the ergodic properties of generic continuous dynamical systems on compact manifolds. As a main result we prove that generic homeomorphisms have convergent Birkhoff averages under continuous observables at Lebesgue almost every…

Dynamical Systems · Mathematics 2013-11-15 Flávio Abdenur , Martin Andersson

We show that a $C^1$-generic expanding map of the circle has no absolutely continuous invariant $\sigma$-finite measure.

Dynamical Systems · Mathematics 2007-05-23 Artur Avila , Jairo Bochi

We show that geometric disorder leads to purely singular continuous spectrum generically. The main input is a result of Simon known as the ``Wonderland theorem''. Here, we provide an alternative approach and actually a slight strengthening…

Mathematical Physics · Physics 2007-05-23 Daniel Lenz , Peter Stollmann

We show that a non-wandering dynamical system with the shadowing property is either equicontinuous or has positive entropy and that in this context uniformly positive entropy is equivalent to weak mixing. We also show that weak mixing…

Dynamical Systems · Mathematics 2013-12-06 Jian Li , Piotr Oprocha

The purpose of this work is threefold: (i) extend shadowing theory for discontinuous and non-invertible systems, (ii) consider more general classes of perturbations (for example, small only on average), (iii) establish a general theory…

Dynamical Systems · Mathematics 2023-01-03 Michael Blank

A generalization of the Lebesgue number lemma is obtained. It is proved that, if each countably infinite locally finite open cover of a chainable metric space $X$ has a Lebesgue number, then $X$ is totally bounded. A property of metric…

General Topology · Mathematics 2022-05-25 Ajit Kumar Gupta , Saikat Mukherjee

Spectrahedral shadows are projections of linear sections of the cone of positive semidefinite matrices. We characterize the polynomials that vanish on the boundaries of these convex sets when both the section and the projection are generic.

Optimization and Control · Mathematics 2015-04-28 Rainer Sinn , Bernd Sturmfels

We propose a novel unifying approach to study the shadowing property for a broad class of dynamical systems (in particular, discontinuous and non-invertible) under a variety of perturbations. In distinction to known constructions, our…

Dynamical Systems · Mathematics 2023-01-03 Michael Blank

For geometrically finite group actions on hyperbolic metric spaces and under certain assumptions on the growth of parabolic subgroups, we prove a global shadow lemma for Patterson-Sullivan measures, as well as a Dirichlet-type theorem and a…

Dynamical Systems · Mathematics 2025-03-27 Harrison Bray , Giulio Tiozzo

We consider low-dimensional systems with the shadowing property. In dimension two, we show that the shadowing property for a homeomorphism implies the existence of periodic orbits in every $\epsilon$-transitive class, and in contrast we…

Dynamical Systems · Mathematics 2019-02-20 Andres Koropecki , Enrique R. Pujals

In our paper, we introduce special-generic-like maps or SGL maps as smooth maps and study their several algebraic topological and differential topological properties. The new class generalize the class of so-called special generic maps.…

General Topology · Mathematics 2023-02-14 Naoki Kitazawa

We discuss whether classical examples of dynamical systems satisfying the shadowing property also satisfy the shadowing property for the induced map on the hyperspace of continua, obtaining both positive and negative results. We prove that…

Dynamical Systems · Mathematics 2025-06-23 Bernardo Carvalho , Udayan Darji

We consider CMV matrices with dynamically defined Verblunsky coefficients. These coefficients are obtained by continuous sampling along the orbits of an ergodic transformation. We investigate whether certain spectral phenomena are generic…

Spectral Theory · Mathematics 2020-01-06 Licheng Fang , David Damanik , Shuzheng Guo