Joetsu University of Education

output

20062025

most citedFOREST Unbiased Galactic plane Imaging survey with the Nobeyama 45-m telescope (FUGIN) I: Project Overview and Initial Results

205 citations

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Showing 2015 · math.OAShow all

3 papers · 2 filters

math.OA2015

A short note on Cuntz splice from a viewpoint of continuous orbit equivalence of topological Markov shifts

Kengo Matsumoto

Let $A$ be an $N \times N$ irreducible matrix with entries in ${0, 1}$ . We present an easy way to find an $(N + 3) \times (N + 3)$ irreducible matrix $A ˉ$ with entries in ${0, 1}$ …

math.OA2015

On flow equivalence of one-sided topological Markov shifts

Kengo Matsumoto

We introduce notions of suspension and flow equivalence on one-sided topological Markov shifts, which we call one-sided suspension and one-sided flow equivalence, respectively. We…

math.OA2015★ 7 cited

Continuous orbit equivalence, flow equivalence of Markov shifts and circle actions on Cuntz--Krieger algebras

Kengo Matsumoto

We will study torus actions on Cuntz--Krieger algebras trivially acting on its canonical maximal abelian $C^{*}$ -subalgebras from the view points of continuous orbit equivalence of o…