Multiplicative equivariant K-theory and the Barratt-Priddy-Quillen theorem

Multiplicative equivariant K-theory and the Barratt-Priddy-Quillen theorem
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乘法等变 K 理论和 Barratt-Priddy-Quillen 定理

DOI:
10.1016/j.aim.2023.108865
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发表时间:
2023
影响因子:
1.7
通讯作者:
Osorno, Angélica M.
Osorno, Angélica M.
中科院分区:
数学1区
文献类型:
--
作者:
Guillou, Bertrand J.;May, J. Peter;Merling, Mona;Osorno, Angélica M.

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我们从文[13]中证明的加法形式出发,证明了等变Barratt-Priddy-Quillen定理的乘法形式。该证明使用了加法等变无限循环空间机的乘法精化,它从对称的单形G-范畴产生正交G-谱。新机器从适当的乘法输入产生高度结构的结合环和模G谱。它依赖于新的可操作的多范畴,这些范畴具有相当大的独立兴趣,并在一般的、不一定是等变的或拓扑的上下文中定义。我们的大部分工作都集中在构建和比较它们上。我们构造了一个从对称单形G-范畴的多范畴到正交G-谱的多范畴的多函子。有了这个机制,我们证明了等价的BPQ定理可以提升到乘法等价。这就是[12]中G-谱范畴的前轴重建所需要的核心。
We prove a multiplicative version of the equivariant Barratt-Priddy-Quillen theorem, starting from the additive version proven in [13]. The proof uses a multiplicative elaboration of an additive equivariant infinite loop space machine that manufactures orthogonalG-spectra from symmetric monoidalG-categories. The new machine produces highly structured associative ring and moduleG-spectra from appropriate multiplicative input. It relies on new operadic multicategories that are of considerable independent interest and are defined in a general, not necessarily equivariant or topological, context. Most of our work is focused on constructing and comparing them. We construct a multifunctor from the multicategory of symmetric monoidalG-categories to the multicategory of orthogonalG-spectra. With this machinery in place, we prove that the equivariant BPQ theorem can be lifted to a multiplicative equivalence. That is the heart of what is needed for the presheaf reconstruction of the category ofG-spectra in [12].
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