activity
20102026
most citedOn almost specification and average shadowing properties

63 citations · 230 across the 33 of their papers we have counts for

collaborators

38 papers

math.DS2026

The conjugacy and flip conjugacy problem for Cantor minimal systems

Konrad Deka, Kosma Kasprzak, Philipp Kunde +2

We prove that topological conjugacy and flip conjugacy of minimal homeomorphisms of a Cantor space are complete analytic relations and hence are not Borel. We also prove that mutua…

math.DS2025

Spectrum of invariant measures via generic points

Sejal Babel, Melih Emin Can, Dominik Kwietniak +1

We describe the spectrum of an ergodic invariant measure by examining the behaviour of its generic points. We define regular Wiener--Wintner generic points for a measure to general…

math.DS2025

On mixing and dense periodicity on spaces with a free arc

Dominik Kwietniak, Filip Wierzbowski

We study the dynamics of continuous maps on compact metric spaces containing a free interval (an open subset homeomorphic to the interval ). We provide a new proof of a resu…

math.DS2025

On entropy of pure mixing maps on dendrites

Dominik Kwietniak, Piotr Oprocha, Jakub Tomaszewski

For every we construct a continuous pure mixing map (topologically mixing, but not exact) on the Gehman dendrite with topological entropy . It has been previously…

math.DS2025

Equilibrium states by synchronization, symbolic extensions, and factors

Katrin Gelfert, Dominik Kwietniak, Yuri Lima

We combine the two classical topological concepts, time-preserving topological factors and synchronizing time-changes of a continuous flow, and explore some of their thermodynamic…

math.DS2025

A note on logarithmic mean equicontinuity

Dominik Kwietniak, Jian Li, Habibeh Pourmand

We study the set of harmonic limits of empirical measures in topological dynamical systems. We obtain a characterization of unique ergodicity based of logarithmic (harmonic) mean c…

math.DS2025

Even the vague specification property implies density of ergodic measures

Damla Buldağ, Bhishan Jacelon, Dominik Kwietniak

We prove that if a topological dynamical system is surjective and has the vague specification property, then its ergodic measures are dense in the space of all invariant me…

math.LO2025

Automorphism groups of measures on the Cantor space. Part I: Good measures and Rokhlin properties

Michal Doucha, Dominik Kwietniak, Maciej Malicki +1

We study criteria for the existence of a dense or comeager conjugacy class in the automorphism group of a given measure on the Cantor space. We concentrate on good measures, define…

math.LO2025

Bowen's Problem 32 and the conjugacy problem for systems with specification

Konrad Deka, Dominik Kwietniak, Bo Peng +1

We show that Rufus Bowen's Problem 32 on the classification of symbolic systems with the specification property does not admit a solution that would use concrete invariants. To thi…

math.DS2023

Minimal and proximal examples of -stable and -approachable shift spaces

Melih Emin Can, Jakub Konieczny, Michal Kupsa +1

We study shift spaces over a finite alphabet that can be approximated by mixing shifts of finite type in the sense of (pseudo)metrics connected to Ornstein's metric ($\ba…

math.LO2023

The descriptive complexity of the set of Poisson generic numbers

Verónica Becher, Stephen Jackson, Dominik Kwietniak +1

Let be an integer. We show that the set of real numbers that are Poisson generic in base is -complete in the Borel hierarchy of subsets of the real l…

math.DS2023★ 14 cited

On the properties of the mean orbital pseudo-metric

Fangzhou Cai, Dominik Kwietniak, Jian Li +1

Given a topological dynamical system , we study properties of the mean orbital pseudo-metric defined by \[ \bar E(x,y)= \limsup_{n\to\infty } \min_{σ\in S_n}\frac{1…

math.DS2022

Borel complexity of sets of points with prescribed Birkhoff averages in Polish dynamical systems with a specification property

Konrad Deka, Steve Jackson, Dominik Kwietniak +1

We study the descriptive complexity of sets of points defined by placing restrictions on statistical behaviour of their orbits in dynamical systems on Polish spaces. A particular e…

math.DS2021

On -approachability, entropy density and -free shifts

Jakub Konieczny, Michal Kupsa, Dominik Kwietniak

We study approximation schemes for shift spaces over a finite alphabet using (pseudo)metrics connected to Ornstein's metric. This leads to a class of shift spaces we call…

math.DS2021★ 1 cited

Amorphic complexity of group actions with applications to quasicrystals

Gabriel Fuhrmann, Maik Gröger, Tobias Jäger +1

In this article, we define amorphic complexity for actions of locally compact -compact amenable groups on compact metric spaces. Amorphic complexity, originally introduced for $…

math.DS2020

Uniform continuity of entropy rate with respect to the -pseudometric

Tomasz Downarowicz, Dominik Kwietniak, Martha Łącka

Assume that a sequence is frequency-typical for a finite-valued stationary stochastic process . We prove that the function associating to the entrop…

math.DS2020

On topological models of zero entropy loosely Bernoulli systems

Felipe García-Ramos, Dominik Kwietniak

We provide a purely topological characterisation of uniquely ergodic topological dynamical systems (TDSs) whose unique invariant measure is zero entropy loosely Bernoulli (followin…

math.DS2019★ 8 cited

On tameness of almost automorphic dynamical systems for general groups

Gabriel Fuhrmann, Dominik Kwietniak

Let be a minimal equicontinuous dynamical system, where is a compact metric space and some topological group acting on . Under very mild assumptions, we show tha…

math.DS2018

Borel complexity of sets of normal numbers via generic points in subshifts with specification

Dylan Airey, Steve Jackson, Dominik Kwietniak +1

We study the Borel complexity of sets of normal numbers in several numeration systems. Taking a dynamical point of view, we offer a unified treatment for continued fraction expansi…

math.DS2018

Robust existence of nonhyperbolic ergodic measures with positive entropy and full support

Christian Bonatti, Lorenzo J. Díaz, Dominik Kwietniak

We prove that for some manifolds the set of robustly transitive partially hyperbolic diffeomorphisms of with one-dimensional nonhyperbolic centre direction contains a …

math.NT2017

Sarnak's conjecture implies the Chowla conjecture along a subsequence

Alexander Gomilko, Dominik Kwietniak, Mariusz Lemańczyk

We show that the Möbius disjointess of zero entropy dynamical systems implies the existence of an increasing sequence of positive integers along which the Chowla conjecture on auto…

math.DS2017★ 14 cited

Feldman-Katok pseudometric and the GIKN construction of nonhyperbolic ergodic measures

Dominik Kwietniak, Martha Łącka

The GIKN construction was introduced by Gorodetski, Ilyashenko, Kleptsyn, and Nalsky in [Functional Analysis and its Applications, 39 (2005), 21--30]. It gives a nonhyperbolic ergo…

math.DS2016

Arcwise connectedness of the set of ergodic measures of hereditary shifts

Jakub Konieczny, Michal Kupsa, Dominik Kwietniak

We show that the set of ergodic invariant measures of a shift space with a safe symbol (this includes all hereditary shifts) is arcwise connected when endowed with the -bar metr…

math.DS2016

Generic Points for Dynamical Systems with Average Shadowing

Dominik Kwietniak, Martha Łącka, Piotr Oprocha

It is proved that to every invariant measure of a compact dynamical system one can associate a certain asymptotic pseudo orbit such that any point asymptotically tracing in average…