Alan W. Reid, Nicholas Rouse
We prove that there are infinitely many non-homeomorphic hyperbolic knot complements $S^3\setminus K_i = \mathbb{H}^3/Γ_i$ for which $Γ_i$ contains elements whose trace is an algebraic non-integer.
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Knots with infinitely many incompressible Seifert surfaces
我们证明了一个纽结在$S^3$与无穷多个不同的不可压缩塞弗特表面包含一个封闭的不可压缩曲面在其补充。
We revisit the issue of the existence of infinitely many distinct prime knots with the same Alexander invariant. We present infinitely many distinct families, each family made up of infinitely many distinct knots. Within each family, the Alexander invariant is the same. Unlike other examples in the literature, ours are elementary and based on a sub-collection of pretzel knots with three tassels.
For a knot $K,$ a slope $r$ is said to be characterizing if for no other knot $J$ does $r$-framed surgery along $J$ yield the same manifold as $r$-framed surgery on $K.$ Applying a condition of Baker and Motegi, we show that the knots $T_{2,2n+3}\#T_{-2,2n+1}$ have infinitely many non-characterizing slopes.
We show that a 2-knot group discovered in the course of a census of 4-manifolds with small triangulations is an HNN extension with finite base and proper associated subgroups, and has the smallest base among such knot groups.
This paper considers "geometric" ideal triangulations of cusped hyperbolic 3-manifolds, i.e. decompositions into positive volume ideal hyperbolic tetrahedra. We exhibit infinitely many geometric ideal triangulations of the figure eight knot complement. As far as we know, this is the first construction of infinitely many geometric triangulations of a cusped hyperbolic 3-manifold. In contrast, our approach does not extend to the figure eight sister manifold, and it is unknown if there are infinitely many geometric triangulations for this manifold.
The construction of knots via annular twisting has been used to create families of knots yielding the same manifold via Dehn surgery. Prior examples have all involved Dehn surgery where the surgery slope is an integral multiple of 2. In this note we prove that for any integer $n$ there exist infinitely many different knots in $S^3$ such that $n$-surgery on those knots yields the same manifold. In particular, when $|n|=1$ homology spheres arise from these surgeries. In addition, when $n \neq 0$ the bridge numbers of the knots constructed tend to infinity as the number of twists along the annulu…
We show the existence of an infinite collection of hyperbolic knots where each of which has in its exterior meridional essential planar surfaces of arbitrarily large number of boundary components, or, equivalently, that each of these knots has essential tangle decompositions of arbitrarily large number of strings. Moreover, each of these knots has in its exterior meridional essential surfaces of any positive genus and (even) number of boundary components. That is, the compact surfaces that have a meridional essential embedding into a hyperbolic knot exterior have meridional essential embedding…
Using the techniques on annulus twists, we observe that $6_3$ has infinitely many non-characterizing slopes, which affirmatively answers a question by Baker and Motegi. Furthermore, we prove that the knots $6_2$, $6_3$, $7_6$, $7_7$, $8_1$, $8_3$, $8_4$, $8_6$, $8_7$, $8_9$, $8_{10}$, $8_{11}$, $8_{12}$, $8_{13}$, $8_{14}$, $8_{17}$,$8_{20}$ and $8_{21}$ have infinitely many non-characterizing slopes. We also introduce the notion of trivial annulus twists and give some possible applications. Finally, we completely determine which knots have special annulus presentations up to 8-crossings.
Zero-surgery characterizes infinitely many knots
本文证明 0 是无穷多个亏格 1 纽结的刻画斜率，推广了此前仅对少数纽结成立的零手术刻画结果。
We prove that for any integer $n$ there exist infinitely many different knots in $S^3$ such that $n$-surgery on those knots yields the same 3-manifold. In particular, when $|n|=1$ homology spheres arise from these surgeries. This answers Problem 3.6(D) on the Kirby problem list. We construct two families of examples, the first by a method of twisting along an annulus and the second by a generalization of this procedure. The latter family also solves a stronger version of Problem 3.6(D), that for any integer $n$, there exist infinitely many mutually distinct knots such that 2-handle addition al…
Knots bounding non-isotopic ribbon disks
本文构造无穷多个带形纽结，每个界定无穷多个外部微分同胚但两两非同位的带形圆盘，并给出广义方结的纤维化同伦带形圆盘的合痕分类，肯定回答了 Hitt 和 Sumners 问题的加强版本。
Twisting a knot $K$ in $S^3$ along a disjoint unknot $c$ produces a twist family of knots $\{K_n\}$ indexed by the integers. Comparing the behaviors of the Seifert genus $g(K_n)$ and the slice genus $g_4(K_n)$ under twistings, we prove that if $g(K_n) - g_4(K_n) < C$ for some constant $C$ for infinitely many integers $n > 0$ or $g(K_n) / g_4(K_n) \to 1$ as $n \to \infty$, then either the winding number of $K$ about $c$ is zero or the winding number equals the wrapping number. As a key application, if $\{K_n\}$ or the mirror twist family $\{\overline{K_n}\}$ contains infinitely many tight fiber…
In this note, we show that if there is a knot in $S^3$ having $\mathbb{Z}_m$ torsion in its Khovanov homology, then there are infinitely many hyperbolic knots and infinitely many prime satellite knots having $\mathbb{Z}_m$ torsion in their Khovanov homology. As an application, we give the first known examples of hyperbolic knots and links with odd (and other non-$\mathbb{Z}_2$ torsion) in their Khovanov homology.
Generating Infinitely Many Hyperbolic Knots with Plats
本文借助 plat 位置、辫群动力学与二重分支覆盖的 Heegaard 距离，利用 pseudo-Anosov 辫构造无穷多互不相同的素双曲 n-桥纽结，并给出亏格与体积的线性下界。
Slice disks modulo local knotting
本文肯定回答了切片圆盘在局部打结模意义下是否可无穷多且两两不同痕的问题，并借助基本群核、广义方纽结分类及卫星运算构造出纤维化双曲纽结的无穷多互不等价切片圆盘。
In the present note, we will show that there are infinitely many composite twisted torus knots.
Trisection genus of knot traces
本文分类了三分亏格至多为2的纽结迹，并构造了无限多具有三分亏格3和4的纽结迹，证明了存在无限族纽结迹具有任意大的三分亏格，同时给出了若干著名纽结迹的三分亏格精确值或紧界。
Delta edge-homotopy invariants of spatial graphs via disk-summing the constituent knots
本文通过对空间图的组成结点进行圆盘和，构造了空间图的一些不变量，并证明了它们的delta边同伦不变性。作为应用，我们证明了可平面图在δ边同伦下存在无穷多个切片空间嵌入，可平面图在δ边同伦下存在无穷多个边界空间嵌入.
We show that there are infinitely many pairs of alternating pretzel knots whose Jones polynomials are identical.
We consider the existence of simple closed geodesics or "geodesic knots" in finite volume orientable hyperbolic 3-manifolds. Previous results show that at least one geodesic knot always exists [Bull. London Math. Soc. 31(1) (1999) 81-86], and that certain arithmetic manifolds contain infinitely many geodesic knots [J. Diff. Geom. 38 (1993) 545-558], [Experimental Mathematics 10(3) (2001) 419-436]. In this paper we show that all cusped orientable finite volume hyperbolic 3-manifolds contain infinitely many geodesic knots. Our proof is constructive, and the infinite family of geodesic knots prod…
In the present paper, we will show that for any integer n>0 there are infinitely many twisted torus knots with n-string essential tangle decompositions.
Virtual Bridge Number One Knots
我们定义了虚拟桥数$vb(K)$和虚拟解结数$vu(K)$不变量。对于普通纽结$K$，它们与桥数$b(K)$和解纽结数$u(K)$密切相关，我们有$vu(K)\leq u(K), vb(K)\leq b(K).$没有普通纽结$K$与$b(K)=1.$我们证明了存在无穷多个虚拟纽结的同伦类，每个同伦类包含无穷多个$K$与$vb(K)=1.$的同伦类事实上，对于每个$i\in \N$，存在$K$虚拟同伦（但实际上不是同位素）与$vb(K)=1$和$vu(K)=i.$的解结
Strongly quasipositive links are concordant to infinitely many strongly quasipositive links
研究证明非平凡强拟正链接与无限多个非同胚的强拟正链接平滑相容，反驳了Baker猜想，方法采用一种卫星操作，其伴接是具有最大Thurston-Bennequin数-1的切片结。
The group of any nontrivial torus knot, hyperbolic 2-bridge knot, or hyperbolic knot with unknotting number one contains infinitely many elements, none the automorphic image of another, such that each normally generates the group.
Asymmetric L-space knots with arbitrary braid index
本文构造了任意编织指数大于4的非对称双曲L空间纽结，且对每个指数均存在无穷多个，推广了Baker等人的结果。
We prove that there are infinitely many $(1,1)$-knots which are topologically slice, but not smoothly slice, which was a conjecture proposed by Béla András Rácz.
Lefschetz Fibrations on Knot Traces of Alternating and Extended Alternating Knots
本文基于之前的工作，将构造正允许Lefschetz纤维的方法应用于交替结和扩展交替结的结迹，证明其纤维的亏格等于平面图中的白区域数，并得出正预结结和正扭转结的结迹的纤维亏格结果。
Knots not detected by any trace
本文研究了某些结无法被任何迹检测到的性质，并证明了存在特定结与无限多个不同结具有相同n-迹。
There is an infinitely generated free subgroup of the smooth knot concordance group with the property that no nontrivial element in this subgroup can be represented by an alternating knot. This subgroup has the further property that every element is represented by a topologically slice knot.
Non-braid positive hyperbolic $L$-space knots
本文研究非辫正超流体L-空间结，构造了无限多个此类结，证明其非辫正性，与Baker和Kegel的例子不同。
Hyperbolic knots with three toroidal Dehn surgeries
证明了一个双曲纽结最多允许三个Dehn变换，这三个Dehn变换产生三个包含不可压缩环面的闭流形。我们证明了存在无穷多个双曲纽结，并使其达到几何上的最大值。有趣的是，这些手术对应于连续的整数。
We show that every nonzero integer occurs in the denominator of a boundary slope for infinitely many (1,1)-knots and that infinitely many (1,1)-knots have boundary slopes of arbitrarily small difference. Specifically, we prove that for any integers m, n > 1 with n odd the exterior of the Montesinos knot K(-1/2, m/(2m \pm 1), 1/n) in S^3 contains an essential surface with boundary slope r = 2(n-1)^2/n if m is even and 2(n+1)^2/n if m is odd. If n > 4m, we prove that K(-1/2, m/(2m+1), 1/n) also has a boundary slope whose difference with r is (8m-2)/(n^2-4mn+n), which decreases to 0 as n increase…
New family of hyperbolic knots whose Upsilon invariants are convex
针对Borodzik和Hedden提出的Upsilon不变量为凸的纽结分类问题，本文采用$(1,1)$-纽结的组合方法计算纽结Floer复形，构造出无穷多互不协边且Upsilon不变量为凸的双曲纽结，丰富了该类纽结的实例。
L-spaces and knot traces
研究结迹如何确定结，证明0迹可识别所有L空间结，并结合Heegaard Floer同调与表面同胚动力学工具。
Exotic knot traces and the epsilon-invariant
基于Hom和Wan的工作，利用Chen和Hanselman的浸入曲线技术，构造新的奇异纽结迹，推进相关猜想。
We show the existence of infinitely many prime knots each of which having in their complements meridional essential surfaces with two boundary components and arbitrarily high genus.
A knot in the 3-sphere is called an L-space knot if it admits a nontrivial Dehn surgery yielding an L-space, i.e. a rational homology 3-sphere with the smallest possible Heegaard Floer homology. Given a knot K, take an unknotted circle c and twist K n times along c to obtain a twist family { K_n }. We give a sufficient condition for { K_n } to contain infinitely many L-space knots. As an application we show that for each torus knot and each hyperbolic Berge knot K, we can take c so that the twist family { K_n } contains infinitely many hyperbolic L-space knots. We also demonstrate that there i…
Torus surguries on knot traces
本文通过将Osoinach的环带扭转构造实现为纽结迹上的环面手术，发现了奇特椭圆曲面、具有新颖性质的奇特迹，并构造了光滑四维庞加莱猜想的新潜在反例。
The search for exotic knot traces
本文提出基于SnapPy和Regina的算法，寻找给定结的友结，并构建简单结的友结 census，提出关于结友的猜想。
Computing polynomial invariants for knots and links using braid representations relies heavily on finding the trace of Hecke algebra elements. There is no easy method known for computing the trace and hence it becomes difficult to compute the known polynomial invariants of knots using their braid representations. In this paper, we provide an algorithm to compute the trace of the Hecke algebra representation of any braid. We simplify this algorithm and write a Mathematica program to compute the invariants such as Alexander polynomial, Jones polynomial, HOMFLY-PT polynomial and Khovanov homology…
We prove that there exist infinitely many topologically slice knots which cannot bound a smooth null-homologous disk in any definite 4-manifold. Furthermore, we show that we can take such knots so that they are linearly independent in the the knot concordance group.
We prove that the so-called t algebra of braids and ties supports a Markov trace. Further, by using this trace in the Jones' recipe, we define invariant polynomials for classical knots and singular knots. Our invariants have three parameters. The invariant of classical knots is an extension of the Homflypt polynomial and the invariant of singular knots is an extension of an invariant of singular knots previously defined by S. Lambropoulou and the second author.
There are only finitely many 3-superbridge knots
虽然对于每个偶数n>2，有无穷多个纽结的超桥指数为n，但超桥指数为3的纽结只有100个。
Trace-free characters and abelian knot contact homology II
本文证明了(4,5)-和(5,6)-扭转结具有鬼特征，从而推翻了Ng关于结接触同调与特征环同构的猜想。
Knotting and linking in 4 and 5 dimensions from barbell diffeomorphisms
本文通过双耳微分同胚构造了无限多个非同胚的3结，每个具有四个临界点，反驳了Scharlemann定理，并解决了Budney和Gabai关于存在结状处理体的猜想最后情况。
Knots and the Sierpinski Tetrahedron
本文证明无穷多纽结不能嵌入谢尔宾斯基四面体的1-骨架，通过球面分解权至多6实现。
Khovanov-Rozansky homology and the braid index of a knot
我们证明了一个结的存在，其辫子指数Morton-Franks-Williams不等式未能检测到，但相关的不等式（KR-MFW不等式），它使用了新的信息Khovanov-Rozansky同源，检测。我们还证明，通过例子，存在无穷多个结的KR-MFW不等式未能检测到的辫子指数。
Notes on constructions of knots with the same trace
本文用Gompf和Miyazaki的可对偶模式解释了Abe等人构造同迹纽结的操作$(*m)$，并证明Teragaito的同4-手术纽结族也可由此操作解释。
Smoothly slice knots with smoothly non-approximable topological slice discs
本文构造出无穷多个光滑切片纽结，其拓扑切片圆盘无法被光滑切片圆盘逼近，解决了光滑与拓扑切片圆盘的逼近问题。
Signatures of TQFTs and trace fields of two-bridge knots
本文证明了支配SO$_3$ TQFT符号的Frobenius代数包含双桥结的迹域，揭示了低维拓扑中两个先验无关对象间的有趣关系。
Fibred knots and twisted Alexander invariants
我们引入了一种新的代数拓扑技术来检测非线性结在三个球体使用扭曲的亚历山大不变量。作为应用，我们证明了对于任何具有非平凡Alexander多项式的结的Seifert矩阵，存在无穷多个具有给定Seifert矩阵的非纤维结。我们说明的例子，有平凡的亚历山大多项式，但没有扭曲的亚历山大不变量的Anglered结的结。
Infinitely many standard trisection diagrams for Gluck twisting
针对 Gay 与 Meier 关于 Gluck 扭转三分图标准性的问题，本文证明拧成 $(p+1,p)$-环面纽结在 $p\ge2$ 时所得三分图均为标准图。
For each $g>0$ we give infinitely many knots that are strongly negative amphichiral, hence rationally slice and representing 2-torsion in the smooth concordance group, yet which do not bound any locally flatly embedded surface in the 4-ball with genus less than or equal to $g$. Our examples also allow us to answer a question about the 4-dimensional clasp number of knots.
Knots yielding homeomorphic lens spaces by Dehn surgery
我们证明了在三维球面中存在无穷多对不同的纽结，使得每对纽结都可以通过相同的Dehn手术产生同胚的透镜空间。此外，该对中的每个结可以被选择为环面结、卫星结或双曲线结，除了两者不能同时是卫星结。这个例外是不可避免的二元二次型的经典理论。
Infinite families of non-fibered twisted torus knots
本文通过显式公式构造了无限族非纤维化扭转环形结，证明其亚历山大多项式主系数可任意取整数值。
Knot exteriors with all compact surfaces of positive genus essentially embedded
针对纽结外部中曲面嵌入的问题，本文证明存在无穷多个纽结外部，其每个外部都具有任意正亏格和任意边界分支数的纵向本质曲面，补充了纽结理论中关于曲面嵌入性质的研究。
Gordian distance and Vassiliev invariants
两个结之间的戈尔迪距离测量了将一个结转换为另一个结需要多少交叉变化。众所周知，在一对戈尔迪距离为2的纽结之间总是有无穷多个不等价的纽结。在本文中，我们证明了这一事实的一个极端的概括：有任意规定的Vassiliev不变量之间的每对结的戈尔迪距离2结。
Embedding spheres in knot traces
本文基于经典3维纽结不变量，刻画了$S^3$中纽结的$n$-标架手术迹的第二同伦群生成元何时能由补空间具有阿贝尔基本群的局部平坦嵌入2-球面实现，并给出了暗示纽结拓扑$n$-shake slice的条件。
In this paper we find infinitely many lattices in $SL(4,\mathbb{R})$ each of which contains thin subgroups commensurable with the figure-eight knot group.
We study knots in $S^3$ with infinitely many $SU(2)$-cyclic surgeries, which are Dehn surgeries such that every representation of the resulting fundamental group into $SU(2)$ has cyclic image. We show that for every such nontrivial knot $K$, its set of $SU(2)$-cyclic slopes is bounded and has a unique limit point, which is both a rational number and a boundary slope for $K$. We also show that such knots are prime and have infinitely many instanton L-space surgeries. Our methods include the application of holonomy perturbation techniques to instanton knot homology, using a strengthening of rece…
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