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arXiv 2409.05965math.ATmath.KT
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等变Witt复形与扭曲拓扑霍奇同调

Equivariant Witt Complexes and Twisted Topological Hochschild Homology

Anna Marie Bohmann, Teena Gerhardt, Cameron Krulewski, Sarah Petersen, Lucy Yang

AI总结:

本文研究扭曲拓扑霍奇同调(THH)的等变同伦群代数结构,定义等变Witt复形并证明其捕捉扭曲THH等变同伦的结构,为等变代数研究提供新贡献。

摘要:

环(或环谱)$R$的拓扑霍奇同调是一个$S^1$-谱,而THH($R$)对$S^1$子群$C_n\subset S^1$的不动点因在代数K理论计算中的应用已被广泛研究。Hesselholt和Madsen证明拓扑霍奇同调的不动点与Witt向量密切相关;他们还定义了Witt复形的概念,并表明其捕捉了THH不动点同伦群的代数结构。Angeltveit、Blumberg、Gerhardt、Hill和Lawson的近期工作基于Hill、Hopkins和Ravenel关于等变范数的研究,定义了等变环(或环谱)的扭曲拓扑霍奇同调理论。本文研究扭曲THH的等变同伦群的代数结构,特别定义了等变Witt复形,并证明扭曲THH的等变同伦具有该结构。我们对等变Witt复形的定义为等变代数领域不断发展的研究体系做出了贡献。

英文摘要:

The topological Hochschild homology of a ring (or ring spectrum) $R$ is an $S^1$-spectrum, and the fixed points of THH($R$) for subgroups $C_n\subset S^1$ have been widely studied due to their use in algebraic K-theory computations. Hesselholt and Madsen proved that the fixed points of topological Hochschild homology are closely related to Witt vectors. Further, they defined the notion of a Witt complex, and showed that it captures the algebraic structure of the homotopy groups of the fixed points of THH. Recent work of Angeltveit, Blumberg, Gerhardt, Hill, Lawson and Mandell defines a theory of twisted topological Hochschild homology for equivariant rings (or ring spectra) that builds upon Hill, Hopkins and Ravenel's work on equivariant norms. In this paper, we study the algebraic structure of the equivariant homotopy groups of twisted THH. In particular, we define an equivariant Witt complex and prove that the equivariant homotopy of twisted THH has this structure. Our definition of equivariant Witt complexes contributes to a growing body of research in the subject of equivariant algebra.

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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