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arXiv 2104.01079math.AT
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有限阿贝尔群的有理等变$K$ -理论上的真交换环结构

Genuine-commutative ring structure on rational equivariant $K$-theory for finite abelian groups

Anna Marie Bohmann, Christy Hazel, Jocelyne Ishak, Magdalena Kędziorek, Clover May

摘要:

在本文中,我们建立在工作,从我们以前的文件(arXiv:2002.01556),以表明,周期理性$G$ -等变拓扑$K$ -理论有一个独特的真正的交换环结构的$G$有限阿贝尔群。这意味着,每一个同伦群是$KU_{\mathbb{Q},G}$的同伦群的真-交换环谱作为真-交换环谱弱等价于$KU_{\mathbb{Q},G}$。与此相反,连通有理等变$K$ -理论谱不具有真-交换环结构的这种类型的唯一性.

英文摘要:

In this paper, we build on the work from our previous paper (arXiv:2002.01556) to show that periodic rational $G$-equivariant topological $K$-theory has a unique genuine-commutative ring structure for $G$ a finite abelian group. This means that every genuine-commutative ring spectrum whose homotopy groups are those of $KU_{\mathbb{Q},G}$ is weakly equivalent, as a genuine-commutative ring spectrum, to $KU_{\mathbb{Q},G}$. In contrast, the connective rational equivariant $K$-theory spectrum does not have this type of uniqueness of genuine-commutative ring structure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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