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Related papers: Genericity of dimension drop on self-affine sets

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We consider one dimensional maps with several neutral fixed points that do not admit any physical measures. We show that there is simplex of measures so that every measure in this simplex has a basin which has full Hausdorff dimension.

Dynamical Systems · Mathematics 2025-09-12 Douglas Coates , Katrin Gelfert

We calculate the Hausdorff dimension of path-dependent shrinking target sets in generic affine iterated function systems. Here, by a path-dependent shrinking target set, we mean a set of points whose orbits infinitely often hit small balls…

Dynamical Systems · Mathematics 2022-10-12 Henna Koivusalo , Lingmin Liao , Michal Rams

We compute the almost sure Hausdorff dimension of random self-affine sponges in $\mathbb{R}^d$ without imposing any separation conditions. In this context, randomness arises from the matrices in the defining semigroup, which are random yet…

Dynamical Systems · Mathematics 2025-05-08 Balázs Bárány , Antti Käenmäki , Michał Rams

We study the Hausdorff dimension of self-similar sets and measures on the line. We show that if the dimension is smaller than the minimum of 1 and the similarity dimension, then at small scales there are super-exponentially close cylinders.…

Classical Analysis and ODEs · Mathematics 2014-09-23 Michael Hochman

In this paper we consider diagonally affine, planar IFS $\Phi=\left\{S_i(x,y)=(\alpha_ix+t_{i,1},\beta_iy+t_{i,2})\right\}_{i=1}^m$. Combining the techniques of Hochman and Feng, Hu we compute the Hausdorff dimension of the self-affine…

Dynamical Systems · Mathematics 2015-12-24 Balázs Bárány , Michał Rams , Károly Simon

We extend some recent results on the Hausdorff convergence of level-sets for total variation regularized linear inverse problems. Dimensions higher than two and measurements in Banach spaces are considered. We investigate the relation…

Optimization and Control · Mathematics 2021-06-09 José A. Iglesias , Gwenael Mercier

Let $G$ be a $p$-adic analytic pro-$p$ group of dimension $d$. We produce an approximate series which descends regularly in strata and whose terms deviate from the lower $p$-series in a uniformly bounded way. This brings to light a new set…

Group Theory · Mathematics 2025-09-11 Iker de las Heras , Benjamin Klopsch , Anitha Thillaisundaram

The fundamental theorem of affine geometry says that a self-bijection $f$ of a finite-dimensional affine space over a possibly skew field takes left affine subspaces to left affine subspaces of the same dimension, then $f$ of the expected…

Rings and Algebras · Mathematics 2017-02-27 A. G. Gorinov

The aim of this note is to investigate the size of the singular set of a general class of free interface problems. We show porosity of the singular set, obtaining as a corollary that both its Hausdorff and Minkowski dimensions are strictly…

Analysis of PDEs · Mathematics 2014-06-02 Guido De Philippis , Alessio Figalli

We completely describe the equilibrium states of a class of potentials over the full shift which includes Falconer's singular value function for affine iterated function systems with invertible affinities. We show that the number of…

Dynamical Systems · Mathematics 2018-03-22 Jairo Bochi , Ian D. Morris

We show that given a domain $\Omega\subseteq \mathbb{R}^{d+1}$ with uniformly non-flat Ahlfors $s$-regular boundary and $s\geq d$, the dimension of its harmonic measure is strictly less than $s$.

Classical Analysis and ODEs · Mathematics 2019-06-26 Jonas Azzam

Motivated by various geometric problems, we study the nodal set of solutions to Dirac equations on manifolds, of general form. We prove that such set has Hausdorff dimension less than or equal to $n-2$, $n$ being the ambient dimension. We…

Analysis of PDEs · Mathematics 2023-12-14 William Borrelli , Ruijun Wu

We present new techniques for removing arrows of bound quiver algebras, reducing thus the Finitistic Dimension Conjecture $\mathsf{(FDC)}$ for a given algebra to a smaller one. Unlike the classic arrow removal operation of…

Representation Theory · Mathematics 2025-07-18 Odysseas Giatagantzidis

An approach is given for estimating the Hausdorff dimension of the univoque set of a self-similar set. This sometimes allows us to get the exact Hausdorff dimensions of the univoque sets.

Dynamical Systems · Mathematics 2017-08-21 Xiu Chen , Kan Jiang , Wenxia Li

We are going to introduce a new algebraic, analytic structure that is a kind of generalization of the Hausdorff dimension and measure. We give many examples and study the basic properties and relations of such systems.

Classical Analysis and ODEs · Mathematics 2019-06-18 Attila Losonczi

The connected part of a metric space $E$ is defined to be the union of non-trivial connected components of $E$. We proved that for a class of self-affine sets called slicing self-affine sponges, the connected part of $E$ either coincides…

Dynamical Systems · Mathematics 2021-10-20 Yan-fang Zhang , Yan-li Xu

For countably infinite IFSs on $\mathbb R^2$ consisting of affine contractions with diagonal linear parts, we give conditions under which the affinity dimension is an upper bound for the Hausdorff dimension and a lower bound for the lower…

Dynamical Systems · Mathematics 2026-01-14 S. van Golden , C. Kalle , S. Kombrink , T. Samuel

In this paper it is shown that if $E\subset\mathbb R^{n+1}$ is an $s$-AD regular compact set, with $s\in [n-\frac12,n)$, and $E$ is contained in a hyperplane or, more generally, in an $n$-dimensional $C^1$ manifold, then the Hausdorff…

Classical Analysis and ODEs · Mathematics 2023-06-13 Xavier Tolsa

We compare the dimension of a non-invertible self-affine set to the dimension of the respective invertible self-affine set. In particular, for generic planar self-affine sets, we show that the dimensions coincide when they are large and…

Dynamical Systems · Mathematics 2024-11-27 Antti Käenmäki , Petteri Nissinen

David maps are generalizations of classical planar quasiconformal maps for which the dilatation is allowed to tend to infinity in a controlled fashion. In this note we examine how these maps distort Hausdorff dimension. We show \vs…

Dynamical Systems · Mathematics 2007-05-23 S. Zakeri