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We show that Vojta's conjecture for some rational surfaces is related to the $abc$ conjecture. More specifically, we prove that Vojta's conjecture on these surfaces implies a special case of the $abc$ conjecture, while the $abc$ conjecture…

数论 · 数学 2016-01-26 Yu Yasufuku

We prove that for some manifolds $M$ the set of robustly transitive partially hyperbolic diffeomorphisms of $M$ with one-dimensional nonhyperbolic centre direction contains a $C^1$-open and dense subset of diffeomorphisms with nonhyperbolic…

动力系统 · 数学 2018-10-08 Christian Bonatti , Lorenzo J. Díaz , Dominik Kwietniak

We prove that every C1 diffeomorphism away from homoclinic tangencies is entropy expansive, with locally uniform expansivity constant. Consequently, such diffeomorphisms satisfy Shub's entropy conjecture: the entropy is bounded from below…

动力系统 · 数学 2010-12-03 Liao Gang , Marcelo Viana , Jiagang Yang

The Sobolev embedding theorem implies that the SRB entropy functional is also differentiable in the family of Anosov diffeomorphisms equipped with a suitable Hilbert manifold structure. The same holds true for the SRB entropy functional…

动力系统 · 数学 2025-09-24 Jianyu Chen , Miaohua Jiang

This paper considers two commuting smooth transformations on a Banach space, and proves the sub-additivity of the measure theoretic entropies under mild conditions. Furthermore, some additional conditions are given for the equality of the…

动力系统 · 数学 2025-07-31 ChiYi Luo , Yun Zhao

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

For any C1 diffeomorphism with dominated splitting we consider a nonempty set of invariant measures which describes the asymptotic statistics of Lebesgue-almost all orbits. They are the limits of convergent subsequences of averages of the…

动力系统 · 数学 2016-06-28 Eleonora Catsigeras , Marcelo Cerminara , Heber Enrich

In this paper we consider $C^1$ surface diffeomorphisms and study the existence of phase transitions, here expressed by the non-analiticity of the pressure function associated to smooth and geometric-type potentials. We prove that the space…

动力系统 · 数学 2023-01-25 Thiago Bomfim , Paulo Varandas

We prove the finiteness of ergodic measures of maximal entropy for partially hyperbolic diffeomorphisms where the center direction has a dominated decomposition into one dimensional bundle and there is a uniform lower bound for the absolute…

动力系统 · 数学 2025-02-27 Juan Carlos Mongez , Maria José Pacifico , Mauricio Poletti

We show that within the Newhouse domain of $C^r$ surface diffeomorphisms ($r \in [2,\infty )$), there exists a dense subset $\mathcal D$ such that for any $f \in \mathcal D$, Lyapunov exponents fail to exist for all points in some open set…

动力系统 · 数学 2026-04-14 Shin Kiriki , Xiaolong Li , Yushi Nakano , Teruhiko Soma

The (measure-theoretical) entropy of a diffeomorphism along an expanding invariant foliation is the rate of complexity generated by the diffeomorphism along the leaves of the foliation. We prove that this number varies upper…

动力系统 · 数学 2018-12-13 Jiagang Yang

In this paper, we study physical measures for partially hyperbolic diffeomorphisms with multi one-dimensional centers under the condition that all Gibbs $u$-states are hyperbolic. We prove the finiteness of ergodic physical measures. Then…

动力系统 · 数学 2023-10-05 Zeya Mi , Yongluo Cao

We prove that the statistical properties of random perturbations of a nonuniformly hyperbolic diffeomorphism are described by a finite number of stationary measures. We also give necessary and sufficient conditions for the stochastic…

动力系统 · 数学 2011-11-10 Jose F. Alves , Vitor Araujo , Carlos H. Vasquez

We study the existence of points on a compact oriented surface at which a symmetric bilinear two-tensor field is conformal to a Riemannian metric. We give applications to the existence of conformal points of surface diffeomorphisms and…

微分几何 · 数学 2024-04-18 Peter Albers , Gabriele Benedetti

We show that for a $C^1$-open and $C^{r}$-dense subset of the set of ergodic iterated function systems of conservative diffeomorphisms of a finite-volume manifold of dimension $d\geq 2$, the extremal Lyapunov exponents do not vanish. In…

动力系统 · 数学 2021-02-12 Pablo G. Barrientos , Dominique Malicet

We prove that every $C^2$ Anosov diffeomorphism in a compact and connected Riemannian manifold has a unique SRB and physical probability measure, whose basin of attraction covers Lebesgue almost every point in the manifold. Then, we use…

动力系统 · 数学 2016-06-06 Paulo Varandas

We prove that symplectic cohomology for open convex symplectic manifolds is invariant when the symplectic form undergoes deformations which may be non-exact and non-compactly supported, provided one uses the correct local system of…

辛几何 · 数学 2020-10-01 Gabriele Benedetti , Alexander F. Ritter

For almost all Riemannian metrics (in the $C^\infty$ Baire sense) on a closed manifold $M^{n+1}$, $3\leq (n+1)\leq 7$, we prove that the union of all closed, smooth, embedded minimal hypersurfaces is dense. This implies there are infinitely…

微分几何 · 数学 2018-02-12 Kei Irie , Fernando C. Marques , André Neves

For an expansive homeomorphism, we investigate the relationship among dimension, entropy, and Lyapunov exponents. Motivated by Young's formula for surface diffeomorphisms, which links dimension and measure-theoretic entropy with hyperbolic…

动力系统 · 数学 2025-09-09 Ercai Chen , Tassilo Küpper , Yunxiang Xie

We show that $\mathcal{C}^{\infty}$ local diffeomorphisms of closed surfaces whose topological entropy is larger than the logarithm of their degree admit a finite number of ergodic measures of maximal entropy. To do this, we construct…

动力系统 · 数学 2025-11-18 Matéo Ghezal