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arXiv 0808.0883math.GT
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鲁棒4-流形与鲁棒嵌入

Robust 4-manifolds and robust embeddings

Vyacheslav Krushkal

摘要:

根据Milnor的观点,3-球中的一个环是同伦平凡的,如果它的分支约束4-球中圆盘的不相交映射。本文关注的问题是什么样的空间会产生相同的同伦平凡链接时,用于磁盘在类似的定义。我们发现,有4-流形,这个属性取决于他们的嵌入在4球。这项工作的动机是A-B切片问题,重新制定的4维拓扑手术猜想。作为一个推论,这为D^4的某类分解的A-B切片问题提供了一个新的次要障碍。

英文摘要:

A link in the 3-sphere is homotopically trivial, according to Milnor, if its components bound disjoint maps of disks in the 4-ball. This paper concerns the question of what spaces give rise to the same class of homotopically trivial links when used in place of disks in an analogous definition. We show that there are 4-manifolds for which this property depends on their embedding in the 4-ball. This work is motivated by the A-B slice problem, a reformulation of the 4-dimensional topological surgery conjecture. As a corollary this provides a new, secondary, obstruction in the A-B slice problem for a certain class of decompositions of D^4.

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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