VOLUME and JONES POLYNOMIAL 1. Introduction Given a Combinatorial Diagram of a Knot in the 3
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Experimental Evidence for the Volume Conjecture for the Simplest Hyperbolic Non-2-Bridge Knot Stavros Garoufalidis Yueheng Lan
ISSN 1472-2739 (on-line) 1472-2747 (printed) 379 Algebraic & Geometric Topology Volume 5 (2005) 379–403 ATG Published: 22 May 2005 Experimental evidence for the Volume Conjecture for the simplest hyperbolic non-2-bridge knot Stavros Garoufalidis Yueheng Lan Abstract Loosely speaking, the Volume Conjecture states that the limit of the n-th colored Jones polynomial of a hyperbolic knot, evaluated at the primitive complex n-th root of unity is a sequence of complex numbers that grows exponentially. Moreover, the exponential growth rate is proportional to the hyperbolic volume of the knot. We provide an efficient formula for the colored Jones function of the simplest hyperbolic non-2-bridge knot, and using this formula, we provide numerical evidence for the Hyperbolic Volume Conjecture for the simplest hyperbolic non-2-bridge knot. AMS Classification 57N10; 57M25 Keywords Knots, q-difference equations, asymptotics, Jones polynomial, Hyperbolic Volume Conjecture, character varieties, recursion relations, Kauffman bracket, skein module, fusion, SnapPea, m082 1 Introduction 1.1 The Hyperbolic Volume Conjecture The Volume Conjecture connects two very different approaches to knot theory, namely Topological Quantum Field Theory and Riemannian (mostly Hyper- bolic) Geometry. The Volume Conjecture states that for every hyperbolic knot K in S3 2πi log |J (n)(e n )| 1 lim K = vol(K), (1) n→∞ n 2π where ± • JK (n) ∈ Z[q ] is the Jones polynomial of a knot colored with the n- dimensional irreducible representation of sl2 , normalized so that it equals to 1 for the unknot (see [J, Tu]), and c Geometry & Topology Publications 380 Stavros Garoufalidis and Yueheng Lan • vol(K) is the volume of a complete hyperbolic metric in the knot com- plement S3 − K ; see [Th]. -
Hyperbolic 4-Manifolds and the 24-Cell
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Florence Research Universita` degli Studi di Firenze Dipartimento di Matematica \Ulisse Dini" Dottorato di Ricerca in Matematica Hyperbolic 4-manifolds and the 24-cell Leone Slavich Tutor Coordinatore del Dottorato Prof. Graziano Gentili Prof. Alberto Gandolfi Relatore Prof. Bruno Martelli Ciclo XXVI, Settore Scientifico Disciplinare MAT/03 Contents Index 1 1 Introduction 2 2 Basics of hyperbolic geometry 5 2.1 Hyperbolic manifolds . .7 2.1.1 Horospheres and cusps . .8 2.1.2 Manifolds with boundary . .9 2.2 Link complements and Kirby calculus . 10 2.2.1 Basics of Kirby calculus . 12 3 Hyperbolic 3-manifolds from triangulations 15 3.1 Hyperbolic relative handlebodies . 18 3.2 Presentations as a surgery along partially framed links . 19 4 The ambient 4-manifold 23 4.1 The 24-cell . 23 4.2 Mirroring the 24-cell . 24 4.3 Face pairings of the boundary 3-strata . 26 5 The boundary manifold as link complement 33 6 Simple hyperbolic 4-manifolds 39 6.1 A minimal volume hyperbolic 4-manifold with two cusps . 39 6.1.1 Gluing of the boundary components . 43 6.2 A one-cusped hyperbolic 4-manifold . 45 6.2.1 Glueing of the boundary components . 46 1 Chapter 1 Introduction In the early 1980's, a major breakthrough in the field of low-dimensional topology was William P. Thurston's geometrization theorem for Haken man- ifolds [16] and the subsequent formulation of the geometrization conjecture, proven by Grigori Perelman in 2005. -
Finite Type Invariants for Knots 3-Manifolds
Pergamon Topology Vol. 37, No. 3. PP. 673-707, 1998 ~2 1997 Elsevier Science Ltd Printed in Great Britain. All rights reserved 0040-9383/97519.00 + 0.00 PII: soo4o-9383(97)00034-7 FINITE TYPE INVARIANTS FOR KNOTS IN 3-MANIFOLDS EFSTRATIA KALFAGIANNI + (Received 5 November 1993; in revised form 4 October 1995; final version 16 February 1997) We use the Jaco-Shalen and Johannson theory of the characteristic submanifold and the Torus theorem (Gabai, Casson-Jungreis)_ to develop an intrinsic finite tvne__ theory for knots in irreducible 3-manifolds. We also establish a relation between finite type knot invariants in 3-manifolds and these in R3. As an application we obtain the existence of non-trivial finite type invariants for knots in irreducible 3-manifolds. 0 1997 Elsevier Science Ltd. All rights reserved 0. INTRODUCTION The theory of quantum groups gives a systematic way of producing families of polynomial invariants, for knots and links in [w3 or S3 (see for example [18,24]). In particular, the Jones polynomial [12] and its generalizations [6,13], can be obtained that way. All these Jones-type invariants are defined as state models on a knot diagram or as traces of a braid group representation. On the other hand Vassiliev [25,26], introduced vast families of numerical knot invariants (Jinite type invariants), by studying the topology of the space of knots in [w3. The compu- tation of these invariants, involves in an essential way the computation of related invariants for special knotted graphs (singular knots). It is known [l-3], that after a suitable change of variable the coefficients of the power series expansions of the Jones-type invariants, are of Jinite type. -
Mutant Knots and Intersection Graphs 1 Introduction
Mutant knots and intersection graphs S. V. CHMUTOV S. K. LANDO We prove that if a finite order knot invariant does not distinguish mutant knots, then the corresponding weight system depends on the intersection graph of a chord diagram rather than on the diagram itself. Conversely, if we have a weight system depending only on the intersection graphs of chord diagrams, then the composition of such a weight system with the Kontsevich invariant determines a knot invariant that does not distinguish mutant knots. Thus, an equivalence between finite order invariants not distinguishing mutants and weight systems depending on intersections graphs only is established. We discuss relationship between our results and certain Lie algebra weight systems. 57M15; 57M25 1 Introduction Below, we use standard notions of the theory of finite order, or Vassiliev, invariants of knots in 3-space; their definitions can be found, for example, in [6] or [14], and we recall them briefly in Section 2. All knots are assumed to be oriented. Two knots are said to be mutant if they differ by a rotation of a tangle with four endpoints about either a vertical axis, or a horizontal axis, or an axis perpendicular to the paper. If necessary, the orientation inside the tangle may be replaced by the opposite one. Here is a famous example of mutant knots, the Conway (11n34) knot C of genus 3, and Kinoshita–Terasaka (11n42) knot KT of genus 2 (see [1]). C = KT = Note that the change of the orientation of a knot can be achieved by a mutation in the complement to a trivial tangle. -
Deep Learning the Hyperbolic Volume of a Knot Arxiv:1902.05547V3 [Hep-Th] 16 Sep 2019
Deep Learning the Hyperbolic Volume of a Knot Vishnu Jejjalaa;b , Arjun Karb , Onkar Parrikarb aMandelstam Institute for Theoretical Physics, School of Physics, NITheP, and CoE-MaSS, University of the Witwatersrand, Johannesburg, WITS 2050, South Africa bDavid Rittenhouse Laboratory, University of Pennsylvania, 209 S 33rd Street, Philadelphia, PA 19104, USA E-mail: [email protected], [email protected], [email protected] Abstract: An important conjecture in knot theory relates the large-N, double scaling limit of the colored Jones polynomial JK;N (q) of a knot K to the hyperbolic volume of the knot complement, Vol(K). A less studied question is whether Vol(K) can be recovered directly from the original Jones polynomial (N = 2). In this report we use a deep neural network to approximate Vol(K) from the Jones polynomial. Our network is robust and correctly predicts the volume with 97:6% accuracy when training on 10% of the data. This points to the existence of a more direct connection between the hyperbolic volume and the Jones polynomial. arXiv:1902.05547v3 [hep-th] 16 Sep 2019 Contents 1 Introduction1 2 Setup and Result3 3 Discussion7 A Overview of knot invariants9 B Neural networks 10 B.1 Details of the network 12 C Other experiments 14 1 Introduction Identifying patterns in data enables us to formulate questions that can lead to exact results. Since many of these patterns are subtle, machine learning has emerged as a useful tool in discovering these relationships. In this work, we apply this idea to invariants in knot theory. -
Arxiv:Math-Ph/0305039V2 22 Oct 2003
QUANTUM INVARIANT FOR TORUS LINK AND MODULAR FORMS KAZUHIRO HIKAMI ABSTRACT. We consider an asymptotic expansion of Kashaev’s invariant or of the colored Jones function for the torus link T (2, 2 m). We shall give q-series identity related to these invariants, and show that the invariant is regarded as a limit of q being N-th root of unity of the Eichler integral of a modular form of weight 3/2 which is related to the su(2)m−2 character. c 1. INTRODUCTION Recent studies reveal an intimate connection between the quantum knot invariant and “nearly modular forms” especially with half integral weight. In Ref. 9 Lawrence and Zagier studied an as- ymptotic expansion of the Witten–Reshetikhin–Turaev invariant of the Poincar´ehomology sphere, and they showed that the invariant can be regarded as the Eichler integral of a modular form of weight 3/2. In Ref. 19, Zagier further studied a “strange identity” related to the half-derivatives of the Dedekind η-function, and clarified a role of the Eichler integral with half-integral weight. From the viewpoint of the quantum invariant, Zagier’s q-series was originally connected with a gener- ating function of an upper bound of the number of linearly independent Vassiliev invariants [17], and later it was found that Zagier’s q-series with q being the N-th root of unity coincides with Kashaev’s invariant [5, 6], which was shown [14] to coincide with a specific value of the colored Jones function, for the trefoil knot. This correspondence was further investigated for the torus knot, and it was shown [3] that Kashaev’s invariant for the torus knot T (2, 2 m + 1) also has a nearly arXiv:math-ph/0305039v2 22 Oct 2003 modular property; it can be regarded as a limit q being the root of unity of the Eichler integral of the Andrews–Gordon q-series, which is theta series with weight 1/2 spanning m-dimensional space. -
THE JONES SLOPES of a KNOT Contents 1. Introduction 1 1.1. The
THE JONES SLOPES OF A KNOT STAVROS GAROUFALIDIS Abstract. The paper introduces the Slope Conjecture which relates the degree of the Jones polynomial of a knot and its parallels with the slopes of incompressible surfaces in the knot complement. More precisely, we introduce two knot invariants, the Jones slopes (a finite set of rational numbers) and the Jones period (a natural number) of a knot in 3-space. We formulate a number of conjectures for these invariants and verify them by explicit computations for the class of alternating knots, the knots with at most 9 crossings, the torus knots and the (−2, 3,n) pretzel knots. Contents 1. Introduction 1 1.1. The degree of the Jones polynomial and incompressible surfaces 1 1.2. The degree of the colored Jones function is a quadratic quasi-polynomial 3 1.3. q-holonomic functions and quadratic quasi-polynomials 3 1.4. The Jones slopes and the Jones period of a knot 4 1.5. The symmetrized Jones slopes and the signature of a knot 5 1.6. Plan of the proof 7 2. Future directions 7 3. The Jones slopes and the Jones period of an alternating knot 8 4. Computing the Jones slopes and the Jones period of a knot 10 4.1. Some lemmas on quasi-polynomials 10 4.2. Computing the colored Jones function of a knot 11 4.3. Guessing the colored Jones function of a knot 11 4.4. A summary of non-alternating knots 12 4.5. The 8-crossing non-alternating knots 13 4.6. -
Jones Polynomials, Volume, and Essential Knot Surfaces
KNOTS IN POLAND III BANACH CENTER PUBLICATIONS, VOLUME 100 INSTITUTE OF MATHEMATICS POLISH ACADEMY OF SCIENCES WARSZAWA 2013 JONES POLYNOMIALS, VOLUME AND ESSENTIAL KNOT SURFACES: A SURVEY DAVID FUTER Department of Mathematics, Temple University Philadelphia, PA 19122, USA E-mail: [email protected] EFSTRATIA KALFAGIANNI Department of Mathematics, Michigan State University East Lansing, MI 48824, USA E-mail: [email protected] JESSICA S. PURCELL Department of Mathematics, Brigham Young University Provo, UT 84602, USA E-mail: [email protected] Abstract. This paper is a brief overview of recent results by the authors relating colored Jones polynomials to geometric topology. The proofs of these results appear in the papers [18, 19], while this survey focuses on the main ideas and examples. Introduction. To every knot in S3 there corresponds a 3-manifold, namely the knot complement. This 3-manifold decomposes along tori into geometric pieces, where the most typical scenario is that all of S3 r K supports a complete hyperbolic metric [43]. Incompressible surfaces embedded in S3 r K play a crucial role in understanding its classical geometric and topological invariants. The quantum knot invariants, including the Jones polynomial and its relatives, the colored Jones polynomials, have their roots in representation theory and physics [28, 46], 2010 Mathematics Subject Classification:57M25,57M50,57N10. D.F. is supported in part by NSF grant DMS–1007221. E.K. is supported in part by NSF grants DMS–0805942 and DMS–1105843. J.P. is supported in part by NSF grant DMS–1007437 and a Sloan Research Fellowship. The paper is in final form and no version of it will be published elsewhere. -
Arxiv:1501.00726V2 [Math.GT] 19 Sep 2016 3 2 for Each N, Ln Is Assembled from a Tangle S in B , N Copies of a Tangle T in S × I, and the Mirror Image S of S
HIDDEN SYMMETRIES VIA HIDDEN EXTENSIONS ERIC CHESEBRO AND JASON DEBLOIS Abstract. This paper introduces a new approach to finding knots and links with hidden symmetries using \hidden extensions", a class of hidden symme- tries defined here. We exhibit a family of tangle complements in the ball whose boundaries have symmetries with hidden extensions, then we further extend these to hidden symmetries of some hyperbolic link complements. A hidden symmetry of a manifold M is a homeomorphism of finite-degree covers of M that does not descend to an automorphism of M. By deep work of Mar- gulis, hidden symmetries characterize the arithmetic manifolds among all locally symmetric ones: a locally symmetric manifold is arithmetic if and only if it has infinitely many \non-equivalent" hidden symmetries (see [13, Ch. 6]; cf. [9]). Among hyperbolic knot complements in S3 only that of the figure-eight is arith- metic [10], and the only other knot complements known to possess hidden sym- metries are the two \dodecahedral knots" constructed by Aitchison{Rubinstein [1]. Whether there exist others has been an open question for over two decades [9, Question 1]. Its answer has important consequences for commensurability classes of knot complements, see [11] and [2]. The partial answers that we know are all negative. Aside from the figure-eight, there are no knots with hidden symmetries with at most fifteen crossings [6] and no two-bridge knots with hidden symmetries [11]. Macasieb{Mattman showed that no hyperbolic (−2; 3; n) pretzel knot, n 2 Z, has hidden symmetries [8]. Hoffman showed the dodecahedral knots are commensurable with no others [7]. -
Dehn Surgery on Knots of Wrapping Number 2
Dehn surgery on knots of wrapping number 2 Ying-Qing Wu Abstract Suppose K is a hyperbolic knot in a solid torus V intersecting a meridian disk D twice. We will show that if K is not the Whitehead knot and the frontier of a regular neighborhood of K ∪ D is incom- pressible in the knot exterior, then K admits at most one exceptional surgery, which must be toroidal. Embedding V in S3 gives infinitely many knots Kn with a slope rn corresponding to a slope r of K in V . If r surgery on K in V is toroidal then either Kn(rn) are toroidal for all but at most three n, or they are all atoroidal and nonhyperbolic. These will be used to classify exceptional surgeries on wrapped Mon- tesinos knots in solid torus, obtained by connecting the top endpoints of a Montesinos tangle to the bottom endpoints by two arcs wrapping around the solid torus. 1 Introduction A Dehn surgery on a hyperbolic knot K in a compact 3-manifold is excep- tional if the surgered manifold is non-hyperbolic. When the manifold is a solid torus, the surgery is exceptional if and only if the surgered manifold is either a solid torus, reducible, toroidal, or a small Seifert fibered manifold whose orbifold is a disk with two cone points. Solid torus surgeries have been classified by Berge [Be] and Gabai [Ga1, Ga2], and by Scharlemann [Sch] there is no reducible surgery. For toroidal surgery, Gordon and Luecke [GL2] showed that the surgery slope must be either an integral or a half integral slope. -
Hyperbolic Structures from Link Diagrams
University of Tennessee, Knoxville TRACE: Tennessee Research and Creative Exchange Doctoral Dissertations Graduate School 5-2012 Hyperbolic Structures from Link Diagrams Anastasiia Tsvietkova [email protected] Follow this and additional works at: https://trace.tennessee.edu/utk_graddiss Part of the Geometry and Topology Commons Recommended Citation Tsvietkova, Anastasiia, "Hyperbolic Structures from Link Diagrams. " PhD diss., University of Tennessee, 2012. https://trace.tennessee.edu/utk_graddiss/1361 This Dissertation is brought to you for free and open access by the Graduate School at TRACE: Tennessee Research and Creative Exchange. It has been accepted for inclusion in Doctoral Dissertations by an authorized administrator of TRACE: Tennessee Research and Creative Exchange. For more information, please contact [email protected]. To the Graduate Council: I am submitting herewith a dissertation written by Anastasiia Tsvietkova entitled "Hyperbolic Structures from Link Diagrams." I have examined the final electronic copy of this dissertation for form and content and recommend that it be accepted in partial fulfillment of the equirr ements for the degree of Doctor of Philosophy, with a major in Mathematics. Morwen B. Thistlethwaite, Major Professor We have read this dissertation and recommend its acceptance: Conrad P. Plaut, James Conant, Michael Berry Accepted for the Council: Carolyn R. Hodges Vice Provost and Dean of the Graduate School (Original signatures are on file with official studentecor r ds.) Hyperbolic Structures from Link Diagrams A Dissertation Presented for the Doctor of Philosophy Degree The University of Tennessee, Knoxville Anastasiia Tsvietkova May 2012 Copyright ©2012 by Anastasiia Tsvietkova. All rights reserved. ii Acknowledgements I am deeply thankful to Morwen Thistlethwaite, whose thoughtful guidance and generous advice made this research possible. -
Volume Conjecture and Topological Recursion
. Volume Conjecture and Topological Recursion .. Hiroyuki FUJI . Nagoya University Collaboration with R.H.Dijkgraaf (ITFA) and M. Manabe (Nagoya Math.) 6th April @ IPMU Papers: R.H.Dijkgraaf and H.F., Fortsch.Phys.57(2009),825-856, arXiv:0903.2084 [hep-th] R.H.Dijkgraaf, H.F. and M.Manabe, to appear. Hiroyuki FUJI Volume Conjecture and Topological Recursion . 1. Introduction Asymptotic analysis of the knot invariants is studied actively in the knot theory. Volume Conjecture [Kashaev][Murakami2] Asymptotic expansion of the colored Jones polynomial for knot K ) The geometric invariants of the knot complement S3nK. S3 Recent years the asymptotic expansion is studied to higher orders. 2~ Sk(u): Perturbative" invariants, q = e [Dimofte-Gukov-Lenells-Zagier]# X1 1 δ k Jn(K; q) = exp S0(u) + log ~ + ~ Sk+1(u) ; u = 2~n − 2πi: ~ 2 k=0 Hiroyuki FUJI Volume Conjecture and Topological Recursion Topological Open String Topological B-model on the local Calabi-Yau X∨ { } X∨ = (z; w; ep; ex) 2 C2 × C∗ × C∗jH(ep; ex) = zw : D-brane partition function ZD(ui) Calab-Yau manifold X Disk World-sheet Labrangian Embedding submanifold = D-brane Ending on Lag.submfd. Holomorphic disk Hiroyuki FUJI Volume Conjecture and Topological Recursion Topological Recursion [Eynard-Orantin] Eynard and Orantin proposed a spectral invariants for the spectral curve C C = f(x; y) 2 (C∗)2jH(y; x) = 0g: • Symplectic structure of the spectral curve C, • Riemann surface Σg,h = World-sheet. (g,h) ) Spectral invariant F (u1; ··· ; uh) ui:open string moduli Eynard-Orantin's topological recursion is applicable. x x1 xh x x x x x x 1 h x x k1 k i1 ij hj q q q = q + Σ l J g g 1 g l l Σg,h+1 Σg−1,h+2 Σℓ,k+1 Σg−ℓ,h−k Spectral invariant = D-brane free energy in top.