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arXiv 1904.04763math.GT
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链环的约化外围系统的刻画

Characterization of the reduced peripheral system of links

Benjamin Audoux, Jean-Baptiste Meilhan

AI总结:

本文研究了链环的约化外围系统,针对其在四个及以上分量时非完整不变量的局限,提出了两种等价链环的刻画方法:基于链环图的图示刻画和基于4维空间带状实体环面的拓扑刻画。

摘要:

约化外围系统由Milnor在五十年代引入,用于研究链环的链环同痕,即在每个链环分量内的同痕和交叉改变。然而,对于四个或更多分量,此不变量并非完整的链环同痕不变量。本文提供了具有相同约化外围系统的链环的两种刻画:一种是图示的,依据链环图,被视为直到自虚化之前的焊接图;另一种是拓扑的,依据4维空间中的带状实体环面,直到带状链环同痕。

英文摘要:

The reduced peripheral system was introduced by Milnor in the fifties for the study of links up to link-homotopy, i.e. up to isotopies and crossing changes within each link component. However, for four or more components, this invariant does not yield a complete link-homotopy invariant. This paper provides two characterizations of links having the same reduced peripheral system: a diagrammatical one, in terms of link diagrams, seen as welded diagrams up to self-virtualization, and a topological one, in terms of ribbon solid tori in 4--space up to ribbon link-homotopy.

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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