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arXiv 2004.05118math.RTmath.ACmath.QA
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与$GL_n$的Drinfeld二重相关的广义簇结构

Generalized Cluster Structures Related to the Drinfeld Double of $GL_n$

Misha Gekhtman, Michael Shapiro, Alek Vainshtein

摘要:

证明了arXiv:1912.00453中构造的$GL_n$的Drinfeld对偶上的正则广义簇结构是完备的,并且与该对偶上的标准Poisson-Lie结构相容.此外,我们表明,$n=4$这种结构是不同的,从以前已知的定期广义集群结构的德林费尔德双,即使他们有相同的兼容泊松结构和相同的冻结变量的集合。进一步证明了arXiv:1912.00453中构造的带周期矩阵上的正则广义簇结构具有相似的相容性和完备性.

英文摘要:

We prove that the regular generalized cluster structure on the Drinfeld double of $GL_n$ constructed in arXiv:1912.00453 is complete and compatible with the standard Poisson--Lie structure on the double. Moreover, we show that for $n=4$ this structure is distinct from a previously known regular generalized cluster structure on the Drinfeld double, even though they have the same compatible Poisson structure and the same collection of frozen variables. Further, we prove that the regular generalized cluster structure on band periodic matrices constructed in arXiv:1912.00453 possesses similar compatibility and completeness properties.

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