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arXiv 2005.04924math.DG
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具有$b_1=1$的紧致非形式闭$G_2$流形

A compact non-formal closed $G_2$ manifold with $b_1=1$

Lucía Martín-Merchán

摘要:

我们构造了一个具有闭$G_2$结构的紧致流形,它不允许任何无挠$G_2$结构,它是非形式的,并且具有第一贝蒂数$b_1=1$ .我们发展了一种方法的决议orbifolds出现的商$M/Z_2$与$M$一个封闭的$G_2$流形的假设下,奇异轨迹进行无处消失的封闭1-形式。

英文摘要:

We construct a compact manifold with a closed $G_2$ structure not admitting any torsion-free $G_2$ structure, which is non-formal and has first Betti number $b_1=1$. We develop a method of resolution for orbifolds that arise as a quotient $M/Z_2$ with $M$ a closed $G_2$ manifold under the assumption that the singular locus carries a nowhere-vanishing closed 1-form.

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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