The cluster-automorphism generation conjecture for noncommutative surface algebras

Let Σ\Sigma be a marked surface, let AΣ{\mathcal A}_\Sigma be its noncommutative cluster algebra, and let Ip,1(Σ)I_{p,1}(\Sigma) denote the set of the relevant once-punctured indices. In the notation of Remark, let the surface automorphisms be the automorphisms induced by surface symmetries, and let φp\varphi_p be the additional automorphism associated with pp. Cluster-automorphism generation conjecture. The group of cluster automorphisms of AΣ{\mathcal A}_\Sigma is generated by the surface automorphisms and the elements φp\varphi_p for p∈Ip,1(Σ)p\in I_{p,1}(\Sigma). The statement extends the known untagged result to the tagged/noncommutative setting described in the paper.

References

Primary source

Arkady Berenstein, Min Huang and Vladimir Retakh, “Noncommutative marked surfaces II: tagged triangulations, clusters, and their symmetries”, arXiv:2507.20393 (2025).

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