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Transactions of the American Mathematical Society
Transactions of the American Mathematical Society
ISSN 1088-6850(online) ISSN 0002-9947(print)


On Frobenius algebras
and the quantum Yang-Baxter equation

Authors: K. I. Beidar, Y. Fong and A. Stolin
Journal: Trans. Amer. Math. Soc. 349 (1997), 3823-3836
MSC (1991): Primary 81R50; Secondary 16L60
MathSciNet review: 1401512
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Abstract: It is shown that every Frobenius algebra over a commutative ring determines a class of solutions of the quantum Yang-Baxter equation, which forms a subbimodule of its tensor square. Moreover, this subbimodule is free of rank one as a left (right) submodule. An explicit form of a generator is given in terms of the Frobenius homomorphism. It turns out that the generator is invertible in the tensor square if and only if the algebra is Azumaya.

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Additional Information

K. I. Beidar
Affiliation: Department of Mathematics, National Cheng-Kung University, Tainan, Taiwan

A. Stolin
Affiliation: Department of Mathematics, University of Göteborg, S-41296 Göteborg, Sweden

PII: S 0002-9947(97)01808-4
Keywords: Quantum Yang-Baxter equation, Frobenius algebra, Azumaya algebra.
Received by editor(s): August 4, 1995
Received by editor(s) in revised form: March 7, 1996
Additional Notes: We would like to express our gratitude to the Swedish Academy of Science for the support of the visit of the first author to Sweden, during which this paper was finished. We are thankful to Professor B. Pareigis for fruitful discussions.
Article copyright: © Copyright 1997 American Mathematical Society

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