Naoto Okubo - Co-primeness preserving higher dimensional extension of $q$-discrete Painlevé I, II equations

ocnmp:15632 - Open Communications in Nonlinear Mathematical Physics, August 18, 2026, Volume 6 - https://doi.org/10.46298/ocnmp.15632
Co-primeness preserving higher dimensional extension of $q$-discrete Painlevé I, II equationsArticle

Authors: Naoto Okubo

We construct the $q$-discrete Painlevé I and II equations and their higher order analogues by virtue of periodic cluster algebras. Using particular $k \times k$ exchange matrices, we show that the cluster algebras corresponding to $k=4$ and $5$ give the $q$-discrete Painlevé I and II equations respectively. For $k \ge 6$, we obtain higher-order discrete equations that satisfy an integrability criterion, namely, the co-primeness property.


Volume: Volume 6
Published on: August 18, 2026
Accepted on: August 16, 2026
Submitted on: May 6, 2025
Keywords: Mathematical Physics

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