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arXiv 2004.08370math.AT
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$\mathbb{R}^r$上点的广义位形空间的上同调

Cohomology of generalised configuration spaces of points on $\mathbb{R}^r$

Marcel Bökstedt, Erica Minuz

摘要:

本文计算了$\mathbb{R}^r$中点的广义型位形空间的上同调环。该配置空间由图索引。在图是完全的情况下,结果是已知的,这是由于阿诺德和科恩。然而,我们的计算给出了一个推广到任何图形和替代证明的经典结果。此外,我们还证明了这种上同调环存在删-缩短正合列。

英文摘要:

We compute the cohomology ring of a generalised type of configuration space of points in $\mathbb{R}^r$. This configuration space is indexed by a graph. In the case the graph is complete the result is known and it is due to Arnold and Cohen. However, our computations give a generalisation to any graph and an alternative proof of the classical result. Moreover, we show that there are deletion-contraction short exact sequences for this cohomology rings.

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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