Legendrian helix and cable links

均匀粗细结型缆链

Cable links of uniformly thick knot types

本文基于Legendrian手术引入新方法，研究了均匀粗细但非Legendrian简单结型缆链的Legendrian实现，发现稳定化链的新同痕现象，并对充分负斜率缆链及twist knots的负缆进行了分类。

Legendrian环面链环与缆绳链环

Legendrian Torus and Cable Links

本文对Legendrian环面链环及均匀粗纽结类型的缆绳链环进行分类，首次发现无穷族Legendrian链环中光滑对称性不可由Legendrian同痕实现，并给出非可去稳定化但非最大Thurston-Bennequin不变量的例子。

Cabling Legendrian and transverse knots

In this paper we will show how to classify Legendrian and transverse knots in the knot type of "sufficiently positive" cables of a knot in terms of the classification of the underlying knot. We will also completely explain the phenomena of "Legendrian large" cables. These are Legendrian representatives of cables that have Thurston-Bennequin invariant larger that the framing coming from the cabling torus. Such examples have only recently, and unexpectedly, been found. We will also give criteria that determines the classification of Legendrian and transverse knots the the knot type of negative c…

Legendrian and transverse cables of positive torus knots

In this paper we classify Legendrian and transverse knots in the knot types obtained from positive torus knots by cabling. This classification allows us to demonstrate several new phenomena. Specifically, we show there are knot types that have non-destabilizable Legendrian representatives whose Thurston-Bennequin invariant is arbitrarily far from maximal. We also exhibit Legendrian knots requiring arbitrarily many stabilizations before they become Legendrian isotopic. Similar new phenomena are observed for transverse knots. To achieve these results we define and study "partially thickenable" t…

勒让德缆线空间与塞弗特纤维化链环

Spaces of Legendrian cables and Seifert fibered links

本文确定了标准接触3-球面中具最大瑟斯顿-本内昆不变量的若干勒让德纽结和链环嵌入空间的同伦型，给出充分正缆线的递归公式，证明相关接触结构空间的同伦等价性与可缩性，还发现满足单射h-原理的无穷多新分支。

Legendrian knots and links classified by classical invariants

It is shown that Legendrian (resp. transverse) cable links in the 3-sphere with its standard tight contact structure, i.e. links consisting of an unknot and a cable of that unknot, are classified by their oriented link type and the classical invariants (Thurston-Bennequin invariant and rotation number in the Legendrian case, self-linking number in the transverse case). The analogous result is proved for torus knots in the 1-jet space of the circle with its standard tight contact structure.