K11n161

K11n160

K11n162

(Knotscape image)	See the full Hoste-Thistlethwaite Table of 11 Crossing Knots. Visit K11n161 at Knotilus!

Knot presentations

Planar diagram presentation	X6271 X10,3,11,4 X12,6,13,5 X20,8,21,7 X18,10,19,9 X16,11,17,12 X13,1,14,22 X4,16,5,15 X2,17,3,18 X8,20,9,19 X21,15,22,14
Gauss code	1, -9, 2, -8, 3, -1, 4, -10, 5, -2, 6, -3, -7, 11, 8, -6, 9, -5, 10, -4, -11, 7
Dowker-Thistlethwaite code	6 10 12 20 18 16 -22 4 2 8 -14

A Braid Representative
A Morse Link Presentation

Three dimensional invariants

Symmetry type Reversible Unknotting number $\{1,2\}$ 3-genus 3 Bridge index 3 Super bridge index Missing Nakanishi index Missing Maximal Thurston-Bennequin number Data:K11n161/ThurstonBennequinNumber Hyperbolic Volume 13.7276 A-Polynomial See Data:K11n161/A-polynomial

[edit Notes for K11n161's three dimensional invariants]

Four dimensional invariants

Smooth 4 genus Missing Topological 4 genus Missing Concordance genus $3$ Rasmussen s-Invariant -2

[edit Notes for K11n161's four dimensional invariants]

Polynomial invariants

Alexander polynomial	$2 t^3-8 t^2+14 t-15+14 t^{-1} -8 t^{-2} +2 t^{-3}$
Conway polynomial	$2 z^6+4 z^4+1$
2nd Alexander ideal (db, data sources)	$\{1\}$
Determinant and Signature	{ 63, 2 }
Jones polynomial	$2 q^7-5 q^6+7 q^5-10 q^4+11 q^3-10 q^2+9 q-5+3 q^{-1} - q^{-2}$
HOMFLY-PT polynomial (db, data sources)	$z^6 a^{-2} +z^6 a^{-4} +3 z^4 a^{-2} +3 z^4 a^{-4} -z^4 a^{-6} -z^4+3 z^2 a^{-2} +2 z^2 a^{-4} -3 z^2 a^{-6} -2 z^2+2 a^{-2} -2 a^{-6} + a^{-8}$
Kauffman polynomial (db, data sources)	$2 z^9 a^{-3} +2 z^9 a^{-5} +4 z^8 a^{-2} +7 z^8 a^{-4} +3 z^8 a^{-6} +4 z^7 a^{-1} -2 z^7 a^{-3} -5 z^7 a^{-5} +z^7 a^{-7} -9 z^6 a^{-2} -21 z^6 a^{-4} -9 z^6 a^{-6} +3 z^6+a z^5-8 z^5 a^{-1} +2 z^5 a^{-3} +14 z^5 a^{-5} +3 z^5 a^{-7} +8 z^4 a^{-2} +30 z^4 a^{-4} +18 z^4 a^{-6} +3 z^4 a^{-8} -7 z^4-2 a z^3+3 z^3 a^{-1} -3 z^3 a^{-3} -17 z^3 a^{-5} -9 z^3 a^{-7} -z^2 a^{-2} -14 z^2 a^{-4} -15 z^2 a^{-6} -5 z^2 a^{-8} +3 z^2+4 z a^{-3} +8 z a^{-5} +4 z a^{-7} -2 a^{-2} +2 a^{-6} + a^{-8}$
The A2 invariant	Data:K11n161/QuantumInvariant/A2/1,0
The G2 invariant	Data:K11n161/QuantumInvariant/G2/1,0

Further Quantum Invariants

K11n161 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["K11n161"];

In[4]:=

Alexander[K][t]

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

Out[4]=

$2 t^3-8 t^2+14 t-15+14 t^{-1} -8 t^{-2} +2 t^{-3}$

In[5]:=

Conway[K][z]

Out[5]=

$2 z^6+4 z^4+1$

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]=

{ 63, 2 }

In[8]:=

Jones[K][q]

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

Out[8]=

$2 q^7-5 q^6+7 q^5-10 q^4+11 q^3-10 q^2+9 q-5+3 q^{-1} - q^{-2}$

In[9]:=

HOMFLYPT[K][a, z]

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

Out[9]=

$z^6 a^{-2} +z^6 a^{-4} +3 z^4 a^{-2} +3 z^4 a^{-4} -z^4 a^{-6} -z^4+3 z^2 a^{-2} +2 z^2 a^{-4} -3 z^2 a^{-6} -2 z^2+2 a^{-2} -2 a^{-6} + a^{-8}$

In[10]:=

Kauffman[K][a, z]

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

Out[10]=

$2 z^9 a^{-3} +2 z^9 a^{-5} +4 z^8 a^{-2} +7 z^8 a^{-4} +3 z^8 a^{-6} +4 z^7 a^{-1} -2 z^7 a^{-3} -5 z^7 a^{-5} +z^7 a^{-7} -9 z^6 a^{-2} -21 z^6 a^{-4} -9 z^6 a^{-6} +3 z^6+a z^5-8 z^5 a^{-1} +2 z^5 a^{-3} +14 z^5 a^{-5} +3 z^5 a^{-7} +8 z^4 a^{-2} +30 z^4 a^{-4} +18 z^4 a^{-6} +3 z^4 a^{-8} -7 z^4-2 a z^3+3 z^3 a^{-1} -3 z^3 a^{-3} -17 z^3 a^{-5} -9 z^3 a^{-7} -z^2 a^{-2} -14 z^2 a^{-4} -15 z^2 a^{-6} -5 z^2 a^{-8} +3 z^2+4 z a^{-3} +8 z a^{-5} +4 z a^{-7} -2 a^{-2} +2 a^{-6} + a^{-8}$

"Similar" Knots (within the Atlas)

Same Alexander/Conway Polynomial: {10_108,}

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["K11n161"];

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]=

{ $2 t^3-8 t^2+14 t-15+14 t^{-1} -8 t^{-2} +2 t^{-3}$, $2 q^7-5 q^6+7 q^5-10 q^4+11 q^3-10 q^2+9 q-5+3 q^{-1} - q^{-2}$ }

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]=

{10_108,}

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:

(0, -2)

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 $0$ $-16$ $0$ $-96$ $-32$ $0$ $-\frac{928}{3}$ $-\frac{64}{3}$ $-144$ $0$ $128$ $0$ $0$ $-432$ $\frac{1120}{3}$ $-\frac{1600}{3}$ $-\frac{496}{3}$ $-80$

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 K11n161. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.

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

Integral Khovanov Homology (db, data source)

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

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.

K11n160 K11n162