论文标题
拓扑同位素和科克伦的衍生不变性
Topological isotopy and Cochran's derived invariants
论文作者
论文摘要
我们在$ 3 $空间中构建一个链接，该链接对任何PL链接都不是同位素（非凸面）。实际上，存在无数$ i $等值的链接类别。 该论文还包括对Cochran不变性$β_I$的一些观察。
We construct a link in the $3$-space that is not isotopic to any PL link (non-ambiently). In fact, there exist uncountably many $I$-equivalence classes of links. The paper also includes some observations on Cochran's invariants $β_i$.
