Exotic cluster structures on SLn : the Cremmer-Gervais case

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Bibliographic Information

Exotic cluster structures on SLn : the Cremmer-Gervais case

M. Gekhtman, M. Shapiro, A. Vainshtein

(Memoirs of the American Mathematical Society, no. 1165)

American Mathematical Society, c2016

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"Volume 246, number 1165 (fourth of 6 numbers), March 2017"

Includes bibliographical references (p. 93-94)

Description and Table of Contents

Description

This is the second paper in the series of papers dedicated to the study of natural cluster structures in the rings of regular functions on simple complex Lie groups and Poisson-Lie structures compatible with these cluster structures. According to our main conjecture, each class in the Belavin-Drinfeld classification of Poisson-Lie structures on $\mathcal{G}$ corresponds to a cluster structure in $\mathcal{O}(\mathcal{G})$. The authors have shown before that this conjecture holds for any $\mathcal{G}$ in the case of the standard Poisson-Lie structure and for all Belavin-Drinfeld classes in $SL_n$, $n<5$. In this paper the authors establish it for the Cremmer-Gervais Poisson-Lie structure on $SL_n$, which is the least similar to the standard one.

Table of Contents

Introduction Cluster structures and Poisson-Lie groups Main result and the outline of the proof Initial cluster Initial quiver Regularity Quiver transformations Technical results on cluster algebras Bibliography

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