English

Noncommutative marked surfaces II: tagged triangulations, clusters, and their symmetries

Representation Theory 2025-08-14 v4 Algebraic Geometry Combinatorics Quantum Algebra

Abstract

The aim of the paper is to define noncommutative cluster structure on several algebras A{\mathcal A} related to marked surfaces possibly with orbifold points of various orders, which includes noncommutative clusters, i.e., embeddings of a given group GG into the multiplicative monoid A×{\mathcal A}^\times and an action of a certain braid-like group BrABr_{\mathcal A} by automorphisms of each cluster group in a compatible way. For punctured surfaces we construct new symmetries, noncommutative tagged clusters and establish a noncommutative Laurent Phenomenon.

Keywords

Cite

@article{arxiv.2507.20393,
  title  = {Noncommutative marked surfaces II: tagged triangulations, clusters, and their symmetries},
  author = {Arkady Berenstein and Min Huang and Vladimir Retakh},
  journal= {arXiv preprint arXiv:2507.20393},
  year   = {2025}
}

Comments

102 pages, 42 figures, AMSLaTeX, acknowledgments updated, AMS classification and keywords added