Root of unity quantum cluster algebras and Cayley–Hamilton algebras
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Published:2023-08-07
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Volume:
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ISSN:0002-9947
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Container-title:Transactions of the American Mathematical Society
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language:en
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Short-container-title:Trans. Amer. Math. Soc.
Author:
Huang Shengnan,Lê Thang,Yakimov Milen
Abstract
We prove that large classes of algebras in the framework of root of unity quantum cluster algebras have the structures of maximal orders in central simple algebras and Cayley–Hamilton algebras in the sense of Procesi. We show that every root of unity upper quantum cluster algebra is a maximal order and obtain an explicit formula for its reduced trace. Under mild assumptions, inside each such algebra we construct a canonical central subalgebra isomorphic to the underlying upper cluster algebra, such that the pair is a Cayley–Hamilton algebra; its fully Azumaya locus is shown to contain a copy of the underlying clusterA\mathcal {A}-variety. Both results are proved in the wider generality of intersections of mixed quantum tori over subcollections of seeds. Furthermore, we prove that all monomial subalgebras of root of unity quantum tori are Cayley–Hamilton algebras and classify those ones that are maximal orders. Arbitrary intersections of those over subsets of seeds are also proved to be Cayley–Hamilton algebras. Previous approaches to constructing maximal orders relied on filtration and homological methods. We use new methods based on cluster algebras.
Funder
National Science Foundation
Publisher
American Mathematical Society (AMS)
Subject
Applied Mathematics,General Mathematics
Reference24 articles.
1. Cluster algebras. III. Upper bounds and double Bruhat cells;Berenstein, Arkady;Duke Math. J.,2005
2. Quantum cluster algebras;Berenstein, Arkady;Adv. Math.,2005
3. The ramifications of the centres: quantised function algebras at roots of unity;Brown, Kenneth A.;Proc. London Math. Soc. (3),2002
4. Advanced Courses in Mathematics. CRM Barcelona;Brown, Ken A.,2002
5. Azumaya loci and discriminant ideals of PI algebras;Brown, K. A.;Adv. Math.,2018
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