K11n84

K11n83

K11n85

(Knotscape image)	See the full Hoste-Thistlethwaite Table of 11 Crossing Knots. Visit K11n84 at Knotilus!

Knot presentations

Planar diagram presentation	X4251 X8394 X5,18,6,19 X7,12,8,13 X2,9,3,10 X11,17,12,16 X13,20,14,21 X15,6,16,7 X17,11,18,10 X19,22,20,1 X21,14,22,15
Gauss code	1, -5, 2, -1, -3, 8, -4, -2, 5, 9, -6, 4, -7, 11, -8, 6, -9, 3, -10, 7, -11, 10
Dowker-Thistlethwaite code	4 8 -18 -12 2 -16 -20 -6 -10 -22 -14

A Braid Representative
A Morse Link Presentation

Three dimensional invariants

Symmetry type Reversible Unknotting number 1 3-genus 2 Bridge index 3 Super bridge index Missing Nakanishi index Missing Maximal Thurston-Bennequin number Data:K11n84/ThurstonBennequinNumber Hyperbolic Volume 11.4316 A-Polynomial See Data:K11n84/A-polynomial

[edit Notes for K11n84's three dimensional invariants]

Four dimensional invariants

Smooth 4 genus Missing Topological 4 genus Missing Concordance genus $2$ Rasmussen s-Invariant 2

[edit Notes for K11n84's four dimensional invariants]

Polynomial invariants

Alexander polynomial	$-2 t^2+9 t-13+9 t^{-1} -2 t^{-2}$
Conway polynomial	$-2 z^4+z^2+1$
2nd Alexander ideal (db, data sources)	$\{1\}$
Determinant and Signature	{ 35, -2 }
Jones polynomial	$2 q^{-1} -3 q^{-2} +5 q^{-3} -6 q^{-4} +6 q^{-5} -5 q^{-6} +4 q^{-7} -3 q^{-8} + q^{-9}$
HOMFLY-PT polynomial (db, data sources)	$z^2 a^8-z^4 a^6-z^2 a^6-z^4 a^4-z^2 a^4-a^4+2 z^2 a^2+2 a^2$
Kauffman polynomial (db, data sources)	$z^6 a^{10}-3 z^4 a^{10}+z^2 a^{10}+3 z^7 a^9-11 z^5 a^9+8 z^3 a^9-z a^9+3 z^8 a^8-11 z^6 a^8+9 z^4 a^8-2 z^2 a^8+z^9 a^7-10 z^5 a^7+11 z^3 a^7-3 z a^7+4 z^8 a^6-16 z^6 a^6+19 z^4 a^6-6 z^2 a^6+z^9 a^5-3 z^7 a^5+2 z^5 a^5+3 z^3 a^5-2 z a^5+z^8 a^4-4 z^6 a^4+7 z^4 a^4-z^2 a^4-a^4+z^5 a^3+2 z^2 a^2-2 a^2$
The A2 invariant	Data:K11n84/QuantumInvariant/A2/1,0
The G2 invariant	Data:K11n84/QuantumInvariant/G2/1,0

Further Quantum Invariants

K11n84 Quantum Invariants.

Computer Talk

The above data is available with the Mathematica package KnotTheory`, as shown in the (simulated) Mathematica session below. Your input (in red) is realistic; all else should have the same content as in a real mathematica session, but with different formatting. This Mathematica session is also available (albeit only for the knot 5_2) as the notebook PolynomialInvariantsSession.nb.

(The path below may be different on your system, and possibly also the KnotTheory` date)

In[1]:=

AppendTo[$Path, "C:/drorbn/projects/KAtlas/"]; << KnotTheory`

Loading KnotTheory` version of August 31, 2006, 11:25:27.5625. Read more at http://katlas.math.toronto.edu/wiki/KnotTheory.

In[3]:=

K = Knot["K11n84"];

In[4]:=

Alexander[K][t]

KnotTheory::loading: Loading precomputed data in PD4Knots`.

Out[4]=

$-2 t^2+9 t-13+9 t^{-1} -2 t^{-2}$

In[5]:=

Conway[K][z]

Out[5]=

$-2 z^4+z^2+1$

In[6]:=

Alexander[K, 2][t]

KnotTheory::credits: The program Alexander[K, r] to compute Alexander ideals was written by Jana Archibald at the University of Toronto in the summer of 2005.

Out[6]=

$\{1\}$

In[7]:=

{KnotDet[K], KnotSignature[K]}

Out[7]=

{ 35, -2 }

In[8]:=

Jones[K][q]

KnotTheory::loading: Loading precomputed data in Jones4Knots`.

Out[8]=

$2 q^{-1} -3 q^{-2} +5 q^{-3} -6 q^{-4} +6 q^{-5} -5 q^{-6} +4 q^{-7} -3 q^{-8} + q^{-9}$

In[9]:=

HOMFLYPT[K][a, z]

KnotTheory::credits: The HOMFLYPT program was written by Scott Morrison.

Out[9]=

$z^2 a^8-z^4 a^6-z^2 a^6-z^4 a^4-z^2 a^4-a^4+2 z^2 a^2+2 a^2$

In[10]:=

Kauffman[K][a, z]

KnotTheory::loading: Loading precomputed data in Kauffman4Knots`.

Out[10]=

$z^6 a^{10}-3 z^4 a^{10}+z^2 a^{10}+3 z^7 a^9-11 z^5 a^9+8 z^3 a^9-z a^9+3 z^8 a^8-11 z^6 a^8+9 z^4 a^8-2 z^2 a^8+z^9 a^7-10 z^5 a^7+11 z^3 a^7-3 z a^7+4 z^8 a^6-16 z^6 a^6+19 z^4 a^6-6 z^2 a^6+z^9 a^5-3 z^7 a^5+2 z^5 a^5+3 z^3 a^5-2 z a^5+z^8 a^4-4 z^6 a^4+7 z^4 a^4-z^2 a^4-a^4+z^5 a^3+2 z^2 a^2-2 a^2$

"Similar" Knots (within the Atlas)

Same Alexander/Conway Polynomial: {9_12,}

Same Jones Polynomial (up to mirroring, $q\leftrightarrow q^{-1}$): {}

Computer Talk

The above data is available with the Mathematica package KnotTheory`. Your input (in red) is realistic; all else should have the same content as in a real mathematica session, but with different formatting.

(The path below may be different on your system, and possibly also the KnotTheory` date)

In[1]:=

AppendTo[$Path, "C:/drorbn/projects/KAtlas/"]; << KnotTheory`

Loading KnotTheory` version of May 31, 2006, 14:15:20.091. Read more at http://katlas.math.toronto.edu/wiki/KnotTheory.

In[3]:=

K = Knot["K11n84"];

In[4]:=

{A = Alexander[K][t], J = Jones[K][q]}

KnotTheory::loading: Loading precomputed data in PD4Knots`.

KnotTheory::loading: Loading precomputed data in Jones4Knots`.

Out[4]=

{ $-2 t^2+9 t-13+9 t^{-1} -2 t^{-2}$, $2 q^{-1} -3 q^{-2} +5 q^{-3} -6 q^{-4} +6 q^{-5} -5 q^{-6} +4 q^{-7} -3 q^{-8} + q^{-9}$ }

In[5]:=

DeleteCases[Select[AllKnots[], (A === Alexander[#][t]) &], K]

KnotTheory::loading: Loading precomputed data in DTCode4KnotsTo11`.

KnotTheory::credits: The GaussCode to PD conversion was written by Siddarth Sankaran at the University of Toronto in the summer of 2005.

Out[5]=

{9_12,}

In[6]:=

DeleteCases[ Select[ AllKnots[], (J === Jones[#][q] || (J /. q -> 1/q) === Jones[#][q]) & ], K ]

KnotTheory::loading: Loading precomputed data in Jones4Knots11`.

Out[6]=

{}

Vassiliev invariants

V2 and V3:

(1, -1)

V2,1 through V6,9:

V2,1 V3,1 V4,1 V4,2 V4,3 V5,1 V5,2 V5,3 V5,4 V6,1 V6,2 V6,3 V6,4 V6,5 V6,6 V6,7 V6,8 V6,9 $4$ $-8$ $8$ $\frac{110}{3}$ $\frac{58}{3}$ $-32$ $-\frac{464}{3}$ $-\frac{224}{3}$ $-40$ $\frac{32}{3}$ $32$ $\frac{440}{3}$ $\frac{232}{3}$ $\frac{15871}{30}$ $\frac{458}{15}$ $\frac{17942}{45}$ $\frac{65}{18}$ $\frac{1951}{30}$

V_2,1 through V_6,9 were provided by Petr Dunin-Barkowski <barkovs@itep.ru>, Andrey Smirnov <asmirnov@itep.ru>, and Alexei Sleptsov <sleptsov@itep.ru> and uploaded on October 2010 by User:Drorbn. Note that they are normalized differently than V₂ and V₃.

Khovanov Homology

The coefficients of the monomials $t^rq^j$ are shown, along with their alternating sums $\chi$ (fixed $j$, alternation over $r$). The squares with yellow highlighting are those on the "critical diagonals", where $j-2r=s+1$ or $j-2r=s-1$, where $s=$-2 is the signature of K11n84. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.

\   r    \    j   \ -8 -7 -6 -5 -4 -3 -2 -1 0 χ -1                 2 2 -3               2 1 -1 -5             3 1   2 -7           3 2     -1 -9         3 3       0 -11       2 3         1 -13     2 3           -1 -15   1 2             1 -17   2               -2 -19 1                 1

Integral Khovanov Homology (db, data source)

$\dim{\mathcal G}_{2r+i}\operatorname{KH}^r_{\mathbb Z}$ $i=-3$ $i=-1$ $r=-8$ ${\mathbb Z}$ $r=-7$ ${\mathbb Z}^{2}\oplus{\mathbb Z}_2$ ${\mathbb Z}$ $r=-6$ ${\mathbb Z}^{2}\oplus{\mathbb Z}_2^{2}$ ${\mathbb Z}^{2}$ $r=-5$ ${\mathbb Z}^{3}\oplus{\mathbb Z}_2^{2}$ ${\mathbb Z}^{2}$ $r=-4$ ${\mathbb Z}^{3}\oplus{\mathbb Z}_2^{3}$ ${\mathbb Z}^{3}$ $r=-3$ ${\mathbb Z}^{3}\oplus{\mathbb Z}_2^{3}$ ${\mathbb Z}^{3}$ $r=-2$ ${\mathbb Z}^{2}\oplus{\mathbb Z}_2^{3}$ ${\mathbb Z}^{3}$ $r=-1$ ${\mathbb Z}\oplus{\mathbb Z}_2^{2}$ ${\mathbb Z}^{2}$ $r=0$ ${\mathbb Z}\oplus{\mathbb Z}_2$ ${\mathbb Z}^{2}$

Computer Talk

Much of the above data can be recomputed by Mathematica using the package KnotTheory`. See A Sample KnotTheory` Session.

Modifying This Page

Read me first: Modifying Knot Pages. See/edit the Hoste-Thistlethwaite Knot Page master template (intermediate). See/edit the Hoste-Thistlethwaite_Splice_Base (expert). Back to the top.

K11n83 K11n85