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arXiv 2409.04861math.AT
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次级上同调运算与环路空间上同调

Secondary cohomology operations and the loop space cohomology

Samson Saneblidze

AI总结:

本文受环路空间上同调启发,在单连通空间上构造次级上同调运算,使上同调成为Hopf代数,并用生成元和关系式计算环路空间上同调环,回答了Borel分解问题,应用于例外群$F_4$。

摘要:

受环路空间上同调的启发,我们在单连通空间$X$的上同调$H^*(X; \mathbb{Z}_p)$上构造次级运算,使其成为Hopf代数。环路空间上同调环$H^*(ΩX; \mathbb{Z}_p)$用生成元和关系式来计算。这回答了A. Borel关于Hopf代数分解为单项生成元张量积的分解,其中生成元的高度由初等和次级上同调运算在$H^*(X;\mathbb{Z}_p)$上的作用决定。给出了计算例外群$F_4$的环路空间上同调的应用。

英文摘要:

Motivated by the loop space cohomology we construct the secondary operations on the cohomology $H^*(X; \mathbb{Z}_p)$ to be a Hopf algebra for a simply connected space $X.$ The loop space cohomology ring $H^*(ΩX; \mathbb{Z}_p)$ is calculated in terms of generators and relations. This answers to A. Borel's decomposition of a Hopf algebra into a tensor product of the monogenic ones in which the heights of generators are determined by means of the action of the primary and secondary cohomology operations on $H^*(X;\mathbb{Z}_p).$ An application for calculating of the loop space cohomology of the exceptional group $F_4$ is given.

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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