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arXiv 1902.06807math.GT
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Shake Slice和Shake Concordant Links

Shake Slice and Shake Concordant Links

Anthony Bosman

摘要:

我们可以通过将2-句柄附加到4-球上,并沿着4-球边界中的链接的分量将r框起来来构造4-流形。如果存在表示4-流形的第二同调的生成元的嵌入球面,我们定义一个链接为r-摇动切片。这自然地扩展了r-shake切片,一个以前只研究结的切片的推广,到多个组件的链接。我们还定义了一个相对的概念,动摇的r-一致性的链接和版本的嵌入式领域,我们称之为强r-动摇切片和强r动摇一致性的更严格的条件。我们提供了无限的链接族来区分一致性、抖动一致性和强抖动一致性。此外,对于r=0,我们完全表征摇片和摇一致的链接的一致性和字符串链接感染。这种特性使我们能够证明,第一个非零米尔诺穆酒吧不变量是不变量的动摇和谐。我们还认为,动摇和谐并不意味着链接同伦。

英文摘要:

We can construct a 4-manifold by attaching 2-handles to a 4-ball with framing r along the components of a link in the boundary of the 4-ball. We define a link as r-shake slice if there exists embedded spheres that represent the generators of the second homology of the 4-manifold. This naturally extends r-shake slice, a generalization of slice that has previously only been studied for knots, to links of more than one component. We also define a relative notion of shake r-concordance for links and versions with stricter conditions on the embedded spheres that we call strongly r-shake slice and strongly r shake concordance. We provide infinite families of links that distinguish concordance, shake concordance, and strong shake concordance. Moreover, for r=0 we completely characterize shake slice and shake concordant links in terms of concordance and string link infection. This characterization allows us to prove that the first non-vanishing Milnor mu bar invariants are invariants of shake concordance. We also argue that shake concordance does not imply link homotopy.

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