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In this paper we investigate multifractal decompositions based on values of Birkhoff averages of functions from a class of symbolically continuous functions. This will be done for an expanding interval map with infinitely many branches and…

Dynamical Systems · Mathematics 2013-02-08 Ai-Hua Fan , Thomas Jordan , Lingmin Liao , Michal Rams

This paper is devoted to study multifractal analysis of quotients of Birkhoff averages for countable Markov maps. We prove a variational principle for the Hausdorff dimension of the level sets. Under certain assumptions we are able to show…

Dynamical Systems · Mathematics 2018-09-18 Godofredo Iommi , Thomas Jordan

We study multifractal decompositions based on Birkhoff averages for sequences of functions belonging to certain classes of symbolically continuous functions. We do this for an expanding interval map with countably many branches, which we…

Dynamical Systems · Mathematics 2023-05-15 Tom Rush

For a Markov map of an interval or the circle with countably many branches and finitely many neutral periodic points, we establish conditional variational formulas for the mixed multifractal spectra of Birkhoff averages of countably many…

Dynamical Systems · Mathematics 2020-06-30 Johannes Jaerisch , Hiroki Takahasi

In this paper, we perform a multifractal analysis of Birkhoff averages for interval maps with finitely many branches and parabolic fixed points. Using the thermodynamic approach, we strengthen the results of Johansson et al. on the…

Dynamical Systems · Mathematics 2025-10-21 Yuya Arima

For a positive measure set of nonuniformly expanding quadratic maps on the interval we effect a multifractal formalism, i.e., decompose the phase space into level sets of time averages of a given observable and consider the associated {\it…

Dynamical Systems · Mathematics 2019-02-20 Yong Moo Chung , Hiroki Takahasi

In this paper, we study the multifractal spectrum of Birkhoff averages for non-uniformly expanding R\'{e}nyi interval maps with countably many branches. Our main theorem substantially strengthens conditional variational formulas established…

Dynamical Systems · Mathematics 2025-11-05 Yuya Arima

For piecewise monotone interval maps we look at Birkhoff spectra for regular potential functions. This means considering the Hausdorff dimension of the set of points for which the Birkhoff average of the potential takes a fixed value. In…

Dynamical Systems · Mathematics 2017-12-12 Thomas Jordan , Michal Rams

We study the multifractal analysis for smooth dynamical systems in dimension one. It is characterized the Hausdorff dimension of the level set obtained from the Birkhoff averages of a continuous function by the local dimensions of…

Dynamical Systems · Mathematics 2008-03-12 Yong Moo Chung

We consider the multifractal analysis for Birkhoff averages of continuous potentials on a class of non-conformal repellers corresponding to the self-affine limit sets studied by Lalley and Gatzouras. A conditional variational principle is…

Dynamical Systems · Mathematics 2011-03-25 Henry WJ Reeve

In this paper, we study the topological spectrum of weighted Birkhoff averages over aperiodic and irreducible subshifts of finite type. We show that for a uniformly continuous family of potentials, the spectrum is continuous and concave…

Dynamical Systems · Mathematics 2021-09-15 Balázs Bárány , Michał Rams , Ruxi Shi

We develop a thermodynamic formalism for quasi-multiplicative potentials on a countable symbolic space and apply these results to the dimension theory of infinitely generated self-affine sets. The first application is a generalisation of…

Dynamical Systems · Mathematics 2017-02-03 Antti Käenmäki , Henry WJ Reeve

In this note we study the multifractal spectrum of Lyapunov exponents for interval maps with infinitely many branches and a parabolic fixed point. It turns out that, in strong contrast with the hyperbolic case, the domain of the spectrum is…

Dynamical Systems · Mathematics 2011-10-10 Godofredo Iommi

We consider the multifractal formalism for the dynamics of semigroups of rational maps on the Riemann sphere and random complex dynamical systems. We elaborate a multifractal analysis of level sets given by quotients of Birkhoff sums with…

Dynamical Systems · Mathematics 2015-07-14 Johannes Jaerisch , Hiroki Sumi

We effect a multifractal analysis for a strongly dissipative H\'enon-like map at the first bifurcation parameter at which the uniform hyperbolicity is destroyed by the formation of tangencies inside the limit set. We decompose the set of…

Dynamical Systems · Mathematics 2016-03-03 Hiroki Takahasi

Let $\Phi = \{\phi_e\}_{e\in E}$ be a finitely irreducible conformal graph directed Markov system (CGDMS) with symbolic representation $E_A^{\infty}$ and limit set $J$. Under a mild condition on the system, we give a multifractal analysis…

Dynamical Systems · Mathematics 2025-02-04 Nathan Dalaklis

In this paper, we study the Hausdorff dimension of the generalized intrinsic level set with respect to the given ergodic meausre in a class of non-uniformly hyperbolic interval maps with finitely many branches.

Dynamical Systems · Mathematics 2021-12-22 Guan-Zhong Ma , Wen-Qiang Shen , Xiao Yao

We consider interval maps with countably many full branches and observables with polynomial tails. We show that the Birkhoff spectrum is real analytic and that its convergence to the Hausdorff dimension of the repeller is governed by the…

Dynamical Systems · Mathematics 2025-06-27 Godofredo Iommi , Mike Todd , Boyuan Zhao

We achieve on self-affine Sierpinski carpets the multifractal analysis of the Birkhoff averages of potentials satisfying a Dini condition. Given such a potential, the corresponding Hausdorff spectrum cannot be deduced from that of the…

Dynamical Systems · Mathematics 2009-11-13 Julien Barral , Mounir Mensi

We show that for almost every map in a transversal one-parameter family of piecewise expanding unimodal maps the Birkhoff sum of suitable observables along the forward orbit of the turning point satisfies the law of iterated logarithm. This…

Dynamical Systems · Mathematics 2013-09-10 Daniel Schnellmann
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