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arXiv 1902.10097math.ATmath.GT
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高连通$(4k+2)$ -流形的映射类群

Mapping class groups of highly connected $(4k+2)$-manifolds

Manuel Krannich

摘要:

利用中同调的自同构群和同伦$(4k+3)$ -球面群计算了$k>0$的流形$\sharp^g(S^{2k+1}\times S^{2k+1})$的映射类群.我们进一步确定其Torelli子群,确定abelianisations,并与我们的结果,这些流形的同伦等价组。

英文摘要:

We compute the mapping class group of the manifolds $\sharp^g(S^{2k+1}\times S^{2k+1})$ for $k>0$ in terms of the automorphism group of the middle homology and the group of homotopy $(4k+3)$-spheres. We furthermore identify its Torelli subgroup, determine the abelianisations, and relate our results to the group of homotopy equivalences of these manifolds.

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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