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Related papers: Bi-Asymptotic $c$-Expansivity

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We define the concept of stronger forms of positively expansive map and name it as $p \:\mathscr{F}-$expansive maps. Here $\mathscr{F}$ is a family of subsets of $\mathbb{N}$. Examples of positively thick expansive and positively syndetic…

Dynamical Systems · Mathematics 2024-07-11 Shital H. Joshi , Ekta Shah

We show that the super fixed point property for nonexpansive mappings and for asymptotically nonexpansive mappings in the intermediate sense are equivalent. As a consequence, we obtain fixed point theorems for asymptotically nonexpansive…

Functional Analysis · Mathematics 2015-11-24 Andrzej Wiśnicki

We define thin and asymptotically scattered metric spaces as asymptotic counterparts of discrete and scattered metric spaces respectively. We characterize asymptotically scattered spaces in terms of prohibited subspaces, and classify thin…

Combinatorics · Mathematics 2012-12-04 Igor Protasov

We study expansive dynamical systems from the viewpoint of general topology. We introduce the notions of orbit and refinement expansivity on topological spaces extending expansivity in the compact metric setting. Examples are given on…

General Topology · Mathematics 2015-09-17 Mauricio Achigar , Alfonso Artigue , Ignacio Monteverde

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

In this note we prove that a homeomorphism is countably-expansive if and only if it is measure-expansive. This result is applied for showing that the $C^1$-interior of the sets of expansive, measure-expansive and continuum-wise expansive…

Dynamical Systems · Mathematics 2014-09-05 Alfonso Artigue , Dante Carrasco-Olivera

We introduce a generalization of the b-metric we call a (b,c)-metric. We show that if $X$ is a $(b,c)$-metric space and $\psi: X \longrightarrow Y$ is a quasi-isometry then $Y$ is $(b,c)$-metrizable. We also define a particular kind of…

Metric Geometry · Mathematics 2022-02-15 Josh Thompson , Davin Hemmila

This article is about the shadowing property of homeomorphisms on compact metric spaces and the map associating a point of the space to each pseudo-orbit, called 'shadowing map'. Based on some particular dynamical properties, as…

Dynamical Systems · Mathematics 2025-04-02 Alfonso Artigue

This paper is concerned with the study of various notions of shadowing of dynamical systems induced by a sequence of maps, so-called time varying maps, on a metric space. We define and study the shadowing, h-shadowing, limit shadowing,…

Dynamical Systems · Mathematics 2022-02-01 Javad Nazarian Sarkooh

We address various notions of shadowing and expansivity for continuous maps restricted to a proper subset of their domain. We prove new equivalences of shadowing and expansive properties, we demonstrate under what conditions certain…

Dynamical Systems · Mathematics 2015-05-20 Andrew Barwell , Chris Good , Piotr Oprocha

We prove that a homeomorphism of a compact metric space has an expansive measure \cite{ms} if and only if it has many ones with invariant support. We also study homeomorphisms for which the expansive measures are dense in the space of Borel…

Dynamical Systems · Mathematics 2016-01-15 C. A. Morales

In this work, a new concept of nonself total asymptotically nonexpansive mapping is introduced and an iterative process is considered for two nonself totally asymptotically nonexpansive mappings. Weak and strong convergence theorems for…

Functional Analysis · Mathematics 2017-04-18 Birol Gunduz , Hemen Dutta , Adem Kilicman

We give sufficient conditions for a diffeomorphism of a compact surface to be robustly $N$-expansive and cw-expansive in the $C^r$-topology. We give examples on the genus two surface showing that they need not to be Anosov diffeomorphisms.…

Dynamical Systems · Mathematics 2015-04-14 Alfonso Artigue

We study homeomorphisms of compact metric spaces whose restriction to the nonwandering set has the pseudo-orbit tracing property. We prove that if there are positively expansive measures, then the topological entropy is positive. Some short…

Dynamical Systems · Mathematics 2014-09-12 C. A. Morales

We show that for a compact surface without boundary $M$ the set of cw-expansive homeomorphisms is dense in the set of all the homeomorphisms of $M$ with respect to the $C^0$ topology. After this we show that for a generic homeomorphism $f$…

Dynamical Systems · Mathematics 2025-04-02 Alfonso Artigue

We relate the local specification and periodic shadowing properties. We also clarify the relation between local weak specification and local specification if the system is measure expansive. The notion of strong measure expansiveness is…

Dynamical Systems · Mathematics 2020-10-30 Welington Cordeiro , Manfred Denker , Xuan Zhang

By utilizing the idea of Colombeau's generalized function, we introduce a notion of asymptotic map between arbitrary diffeological spaces. The category consisting of diffeological spaces and asymptotic maps is enriched over the category of…

Algebraic Topology · Mathematics 2024-04-12 Kazuhisa Shimakawa

We introduce asymptotic-M\"obius (AM) maps, a large-scale analogue of quasi-M\"obius maps tailored to geometric group theory. AM-maps capture coarse cross-ratio behavior for configurations of points that lie far apart, providing a notion of…

Metric Geometry · Mathematics 2026-01-13 Georg Grützner

We prove that periodic asymptotic expansiveness introduced in \cite{em} implies the equidistribution of periodic points to measures of maximal entropy. Then following Yomdin's approach \cite{Yom} we show by using semi-algebraic tools that…

Dynamical Systems · Mathematics 2017-05-25 David Burguet

In this paper, we introduce and study a notion of asymptotic expansion in measure for measurable actions. This generalises expansion in measure and provides a new perspective on the classical notion of strong ergodicity. Moreover, we obtain…

Dynamical Systems · Mathematics 2021-02-11 Kang Li , Federico Vigolo , Jiawen Zhang