dorsal/arxiv
View SchemaEmergent order spectrum for transitive homeomorphisms
| Authors | Filippo Ciavattini, Marco Farotti, Camilla Lucamarini |
|---|---|
| Categories | |
| ArXiv ID | 2601.09325vv1 |
| URL | https://arxiv.org/abs/2601.09325 |
| License | http://creativecommons.org/licenses/by/4.0/ |
Abstract
The Emergent Order Spectrum $\Omega(x,y)$ is a topological invariant of dynamical systems providing order-types induced by the limit order of order-compatible nested $\varepsilon_n$-chains (with $\varepsilon_n\to 0$) from $x$ to $y$. In this paper, we investigate how rich these spectra can be under natural dynamical hypotheses. For a transitive homeomorphism $f$ on a compact metric space $X$ with $\lvert X\rvert=\mathfrak{c}$, we show that the global spectrum $\Omega_f(X^2)$ is universal at the countable scattered level: every countable scattered order-type together with the order-type of the rationals appear in $\Omega_f(X^2)$. More precisely, there exists a comeagre subset $M\subseteq X^2$ such that, for every $(x,y)\in M$, the individual spectrum $\Omega_f(x,y)$ already realizes all countably infinite scattered order-types; moreover, the order-type of the rationals belongs to $\Omega_f(x,y)$ for every pair $(x,y)\in X^2$.
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"abstract": "The Emergent Order Spectrum $\\Omega(x,y)$ is a topological invariant of dynamical systems providing order-types induced by the limit order of order-compatible nested $\\varepsilon_n$-chains (with $\\varepsilon_n\\to 0$) from $x$ to $y$. In this paper, we investigate how rich these spectra can be under natural dynamical hypotheses. For a transitive homeomorphism $f$ on a compact metric space $X$ with $\\lvert X\\rvert=\\mathfrak{c}$, we show that the global spectrum $\\Omega_f(X^2)$ is universal at the countable scattered level: every countable scattered order-type together with the order-type of the rationals appear in $\\Omega_f(X^2)$. More precisely, there exists a comeagre subset $M\\subseteq X^2$ such that, for every $(x,y)\\in M$, the individual spectrum $\\Omega_f(x,y)$ already realizes all countably infinite scattered order-types; moreover, the order-type of the rationals belongs to $\\Omega_f(x,y)$ for every pair $(x,y)\\in X^2$.",
"arxiv_id": "2601.09325",
"authors": [
"Filippo Ciavattini",
"Marco Farotti",
"Camilla Lucamarini"
],
"categories": [
"math.DS"
],
"license": "http://creativecommons.org/licenses/by/4.0/",
"title": "Emergent order spectrum for transitive homeomorphisms",
"url": "https://arxiv.org/abs/2601.09325",
"version": "v1"
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