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arXiv 1806.07541math.GT
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四维流形中的等价非同位素球

Equivalent non-isotopic spheres in 4-manifolds

Hannah R. Schwartz

摘要:

我们构建无穷多个光滑定向4-流形包含对同伦,光滑嵌入2-领域,不是拓扑同位素,但等价的环境同胚诱导的身份上的同源。这些例子表明,Gabai最近的“广义”4D灯泡定理并不推广到任意的4-流形。与此相反,我们还表明,有顺利嵌入2球,这是等价的和拓扑同位素,但不是顺利同位素。

英文摘要:

We construct infinitely many smooth oriented 4-manifolds containing pairs of homotopic, smoothly embedded 2-spheres that are not topologically isotopic, but that are equivalent by an ambient diffeomorphism inducing the identity on homology. These examples show that Gabai's recent "Generalized" 4D Lightbulb Theorem does not generalize to arbitrary 4-manifolds. In contrast, we also show that there are smoothly embedded 2-spheres that are both equivalent and topologically isotopic, but not smoothly isotopic.

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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