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arXiv 2204.07985math.AT
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反同调

Reflexive homology

Daniel Graves

AI总结:

本文研究反同调与自由环路空间 $C_2$-等变同调的关系,通过函子同调定义反同调并给出计算双复形,证明其满足 Morita 不变性且与对合 Hochschild 同调在特定条件下一致。

摘要:

反同调是与反交叉单纯群(基本交叉单纯群之一)相关的同调理论。它是扩展 Hochschild 同调以检测反序对合的最一般方法。本文研究了反同调与自由环路空间的 $C_2$-等变同调之间的关系。我们用函子同调定义了反同调。我们给出了计算反同调的双复形及一些计算,包括张量代数的反同调。我们证明了群代数的反同调同构于分类空间自由环路空间上 $C_2$-等变 Borel 构造的同调。我们给出了群代数反同调按群元素共轭类索引的直和分解,其分量由群同调的反类似物定义。我们定义了反同调的超同调版本,并用它研究某些自由环路及自由环路-悬空空间的 $C_2$-等变同调。我们证明反同调满足 Morita 不变性。我们证明了在良好条件下,Braun 及 Fernàndez-València 和 Giansiracusa 研究的对合 Hochschild 同调与反同调一致。

英文摘要:

Reflexive homology is the homology theory associated to the reflexive crossed simplicial group; one of the fundamental crossed simplicial groups. It is the most general way to extend Hochschild homology to detect an order-reversing involution. In this paper we study the relationship between reflexive homology and the $C_2$-equivariant homology of free loop spaces. We define reflexive homology in terms of functor homology. We give a bicomplex for computing reflexive homology together with some calculations, including the reflexive homology of a tensor algebra. We prove that the reflexive homology of a group algebra is isomorphic to the homology of the $C_2$-equivariant Borel construction on the free loop space of the classifying space. We give a direct sum decomposition of the reflexive homology of a group algebra indexed by conjugacy classes of group elements, where the summands are defined in terms of a reflexive analogue of group homology. We define a hyperhomology version of reflexive homology and use it to study the $C_2$-equivariant homology of certain free loop and free loop-suspension spaces. We show that reflexive homology satisfies Morita invariance. We prove that under nice conditions the involutive Hochschild homology studied by Braun and by Fernàndez-València and Giansiracusa coincides with reflexive homology.

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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