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

动力系统 · 数学 2007-05-23 Artur Avila , Jairo Bochi

We prove that for any given modulus of continuity {\omega} there exist (uncountably many) C1 uniformly expanding maps of the circle whose derivatives have $C^1$ as an optimal modulus of continuity and which preserve an invariant probability…

动力系统 · 数学 2023-04-26 Hamza Ounesli

In this work, we show that if $f$ is a uniformly continuous map defined over a Polish metric space, then the set of $f$-invariant measures with zero metric entropy is a $G_\delta$ set (in the weak topology). In particular, this set is…

动力系统 · 数学 2020-05-26 Silas L. Carvalho , Alexander Condori

For continuous maps on a compact manifold M, particularly for those that do not preserve the Lebesgue measure m, we define the observable invariant probability measures as a generalization of the physical measures. We prove that any…

动力系统 · 数学 2012-03-01 E. Catsigeras , H. Enrich

In this paper, we consider the question of existence and uniqueness of absolutely continuous invariant measures for expanding $C^1$ maps of the circle. This is a question which arises naturally from results which are known in the case of…

chao-dyn · 物理学 2008-02-03 Anthony N. Quas

Let $\Lambda$ be an isolated non-trival transitive set of a $C^1$ generic diffeomorphism $f\in\Diff(M)$. We show that the space of invariant measures supported on $\Lambda$ coincides with the space of accumulation measures of time averages…

动力系统 · 数学 2012-03-15 Wenxiang Sun , Xueting Tian

Murphy and the second author showed that a generic closed Riemannian manifold has no totally geodesic submanifolds, provided it is at least four dimensional. Lytchak and Petrunin established the same thing in dimension 3. For the higher…

微分几何 · 数学 2024-04-03 Hasan M. El-Hasan , Frederick Wilhelm

We consider continuous maps of the interval which preserve the Lebesgue measure. Except for the identity map or $1 - \id$ all such maps have topological entropy at least $\log2/2$ and generically they have infinite topological entropy. In…

动力系统 · 数学 2026-02-06 Jozef Bobok , Jernej Činč , Piotr Oprocha , Serge Troubetzkoy

We consider families of transformations in multidimensional Riemannian manifolds with non-uniformly expanding behavior. We give sufficient conditions for the continuous variation (in the $L^1$-norm) of the densities of absolutely continuous…

动力系统 · 数学 2009-11-10 Jose F. Alves

For $C^1$ diffeomorphisms with continuous invariant splitting without domination, we prove the existence of (un)stable manifold under the hyperbolicity of invariant measures.

动力系统 · 数学 2025-10-28 Yongluo Cao , Zeya Mi , Rui Zou

It is well-known that every multicritical circle map without periodic orbits admits a unique invariant Borel probability measure which is purely singular with respect to Lebesgue measure. Can such a map leave invariant an infinite,…

动力系统 · 数学 2021-10-04 Edson de Faria , Pablo Guarino

In this article we intend to contribute in the understanding of the ergodic properties of the set RT of robustly transitive local diffeomorphisms on a compact manifold M without boundary. We prove that there exists a C^1 residual subset R_0…

动力系统 · 数学 2014-01-28 Cristina Lizana , Vilton Pinheiro , Paulo Varandas

We show that for entire maps of the form $z \mapsto \lambda \exp(z)$ such that the orbit of zero is bounded and such that Lebesgue almost every point is transitive, no absolutely continuous invariant probability measure can exist. This…

动力系统 · 数学 2009-02-18 Neil Dobbs , Bartlomiej Skorulski

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…

动力系统 · 数学 2013-11-15 Flávio Abdenur , Martin Andersson

A sufficient geometrical condition for the existence of absolutely continuous invariant probability measures for S-unimodal maps will be discussed. The Lebesgue typical existence of such measures in the quadratic family will be a…

动力系统 · 数学 2008-02-03 Marco Martens , Tomasz Nowicki

We study the invariant measures of typical $C^0$ maps on compact connected manifolds with or without boundary, and also of typical homeomorphisms. We prove that the weak$^*$ closure of the set of ergodic measurescoincides with the weak$^*$…

动力系统 · 数学 2020-01-08 Eleonora Catsigeras , Serge Troubetzkoy

We show the existence of Lebesgue-equivalent conservative and ergodic $\sigma$-finite invariant measures for a wide class of one-dimensional random maps consisting of piecewise convex maps. We also estimate the size of invariant measures…

动力系统 · 数学 2023-03-21 Tomoki Inoue , Hisayoshi Toyokawa

In this work, we are interested in characterizing typical (generic) dimensional properties of invariant measures associated with the full-shift system, $T$, in a product space whose alphabet is a perfect and separable metric space (thus,…

动力系统 · 数学 2021-01-26 Silas Luiz Carvalho , Alexander Condori

M. Gromov introduced the mean dimension for a continuous map in the late 1990's, which is an invariant under topological conjugacy. On the other hand, the notion of metric mean dimension for a dynamical system was introduced by…

动力系统 · 数学 2021-10-12 Jeovanny de Jesus Muentes Acevedo

We show that for every compact 3-manifold $M$ there exists an open subset of $\diff ^1(M)$ in which every generic diffeomorphism admits uncountably many ergodic probability measures which are hyperbolic while their supports are disjoint and…

动力系统 · 数学 2014-09-02 Christian Bonatti , Sylvain Crovisier , Katsutoshi Shinohara
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