activity
20152022
most citedGraph covers and ergodicity for 0-dimensional systems

11 citations · 15 across the 13 of their papers we have counts for

collaborators

13 papers

math.DS2022

On some properties of basic sets

Takashi Shimomura

In the theory of zero-dimensional systems and their relation to -algebras, Poon (1990) introduced a class of closed sets. We call the closed sets quasi-sections. Medynets (200…

math.DS2020

Refinement of Bratteli-Vershik models

Takashi Shimomura

In the zero-dimensional systems, the Bratteli-Vershik models can be built upon certain closed sets that are called `quasi-sections' in this article. There exists a bijective corres…

math.DS2017

A simple approach to substitution minimal subshifts

Takashi Shimomura

In the study of substitution minimal subshifts, some complicated trivialities have hindered simple and general approaches. Recently, Maloney and Rust introduced the term "tame," si…

math.DS2016

Topological rank does not increase by natural extension of Cantor minimals

Takashi Shimomura

Downarowicz and Maass (2008) have defined the topological rank for all Cantor minimal homeomorphisms. On the other hand, Gambaudo and Martens (2006) have expressed all Cantor minim…

math.DS2016★ 2 cited

Finite rank Bratteli--Vershik homeomorphisms are expansive

Takashi Shimomura

Downarowicz and Maass (2008) have shown that every Cantor minimal homeomorphism with finite topological rank is expansive. Bezuglyi, Kwiatkowski, and Medynets (2009) extend…

math.DS2016★ 1 cited

Bratteli--Vershik models and graph covering models

Takashi Shimomura

Based on our previous graph covering method, we introduce weighted graph covering models and flexible graph covering models that are almost equivalent to the well-known Bratteli--V…

math.DS2016

Proximal Cantor systems with topological rank 2 are residually scrambled

Takashi Shimomura

Downarowicz and Maass (2008) proposed topological ranks for all homeomorphic Cantor minimal dynamical systems using properly ordered Bratteli diagrams. In this study, we adopt this…

math.DS2015

The construction of a completely scrambled system by graph covers

Takashi Shimomura

In this paper, we define a new construction of completely scrambled 0-dimensional systems using the inverse limit of sequences of directed graph covers. These examples are transiti…

math.DS2015

Combinatorial embedding of chain transitive zero-dimensional systems into chaos

Takashi Shimomura

We show that a zero-dimensional chain transitive dynamical system can be embedded into a densely uniformly chaotic system, with dense uniformly chaotic set . We concretely const…

math.DS2015★ 1 cited

Non-homeomorphic topological rank and expansiveness

Takashi Shimomura

Downarowicz and Maass (2008) have shown that every Cantor minimal homeomorphism with finite topological rank is expansive. Bezuglyi, Kwiatkowski and Medynets (2009) extende…

math.DS2015

Aperiodic homeomorphisms approximate chain mixing endomorphisms on the Cantor set

Takashi Shimomura

Let be a chain mixing continuous onto mapping from the Cantor set onto itself.Let be an aperiodic homeomorphism on the Cantor set. We show that homeomorphisms that are topo…

math.DS2015★ 11 cited

Graph covers and ergodicity for 0-dimensional systems

Takashi Shimomura

Bratteli--Vershik systems have been widely studied. In the context of general 0-dimensional systems, Bratteli--Vershik systems are homeomorphisms that have Kakutani--Rohlin refinem…

math.DS2015

Chain mixing endomorphisms are approximated by subshifts on the Cantor set

Takashi Shimomura

Let f be a chain mixing continuous onto mapping from the Cantor set onto itself. Let g be a homeomorphism on the Cantor set that is topologically conjugate to a subshift. Then, hom…