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Bases for upper cluster algebras and tropical points

Fan Qin Shanghai Jiao Tong University

Representation Theory Rings and Algebras mathscidoc:2202.30003

to appear in Journal of the European Mathematical Society, 2021.8
It is known that many (upper) cluster algebras possess different kinds of good bases which contain the cluster monomials and are parametrized by the tropical points of cluster Poisson varieties. For a large class of upper cluster algebras (injective-reachable ones with full rank coefficients), we describe all of its bases with these properties. Moreover, we show the existence of the generic basis for them. In addition, we prove that Bridgeland's representation theoretic formula is effective for their theta functions (weak genteelness). Our results apply to (almost) all well-known cluster algebras arising from representation theory or higher Teichmüller theory, including quantum affine algebras, unipotent cells, double Bruhat cells, skein algebras over surfaces, where we change the coefficients if necessary so that the full rank assumption holds.
cluster algebras
[ Download ] [ 2022-02-22 18:44:08 uploaded by fqin ] [ 594 downloads ] [ 0 comments ] 
@inproceedings{fan2021bases,
  title={Bases for upper cluster algebras and tropical points},
  author={Fan Qin},
  url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220222184408871006900},
  booktitle={to appear in Journal of the European Mathematical Society},
  year={2021},
}
Fan Qin. Bases for upper cluster algebras and tropical points. 2021. In to appear in Journal of the European Mathematical Society. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20220222184408871006900.
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