Upper cluster algebras and choice of ground ring

Upper cluster algebras and choice of ground ring
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DOI:
10.1007/s11425-018-9486-6
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发表时间:
2018-02
期刊:
Science China Mathematics
影响因子:
--
通讯作者:
Eric Bucher;John M. Machacek;M. Shapiro
Eric Bucher;John M. Machacek;M. Shapiro
中科院分区:
其他
文献类型:
--
作者:
Eric Bucher;John M. Machacek;M. Shapiro

文献摘要

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我们研究了一个簇代数是否等于它的上簇代数的问题对基环选择的依赖性。利用Muller集团局部化理论的一个变形,给出了集团代数与上集团代数相等的一个条件。一个明确的例子表现出依赖于接地环。我们还提出了一个最大的绿色序列的例子。
We initiate a study of the dependence of the choice of ground ring on the problem on whether a cluster algebra is equal to its upper cluster algebra. A condition for when there is equality of the cluster algebra and upper cluster algebra is given by using a variation of Muller’s theory of cluster localization. An explicit example exhibiting dependence on the ground ring is provided. We also present a maximal green sequence for this example.