论文标题
单个转折打开
Unknotting with a single twist
论文作者
论文摘要
给定三球中的一个结,是否可以通过执行单个扭曲来解开它,如果是这样,那么这种扭曲的链接数字是什么?我们会使用指定的链接数字的扭曲产生障碍物。我们描述的障碍物是使用经典的结,卡森 - 戈登不变的和海加尔德浮子理论构建的。
Given a knot in the three-sphere, is it possible to unknot it by performing a single twist, and if so, what are the possible linking numbers of such a twist? We develop obstructions to unknotting using a twist of a specified linking number. The obstructions we describe are built using classical knot invariants, Casson-Gordon invariants, and Heegaard Floer theory.