K11n9

K11n8

K11n10

(Knotscape image)	See the full Hoste-Thistlethwaite Table of 11 Crossing Knots. Visit K11n9 at Knotilus!

Knot presentations

Planar diagram presentation	X4251 X8394 X10,6,11,5 X14,8,15,7 X2,9,3,10 X11,19,12,18 X6,14,7,13 X15,21,16,20 X17,1,18,22 X19,13,20,12 X21,17,22,16
Gauss code	1, -5, 2, -1, 3, -7, 4, -2, 5, -3, -6, 10, 7, -4, -8, 11, -9, 6, -10, 8, -11, 9
Dowker-Thistlethwaite code	4 8 10 14 2 -18 6 -20 -22 -12 -16

A Braid Representative
A Morse Link Presentation

Three dimensional invariants

Symmetry type Chiral Unknotting number 3 3-genus 4 Bridge index 3 Super bridge index Missing Nakanishi index Missing Maximal Thurston-Bennequin number Data:K11n9/ThurstonBennequinNumber Hyperbolic Volume 10.3175 A-Polynomial See Data:K11n9/A-polynomial

[edit Notes for K11n9's three dimensional invariants]

Four dimensional invariants

Smooth 4 genus Missing Topological 4 genus Missing Concordance genus [math]\displaystyle{ 4 }[/math] Rasmussen s-Invariant -6

[edit Notes for K11n9's four dimensional invariants]

Polynomial invariants

Alexander polynomial	[math]\displaystyle{ -t^4+3 t^3-t^2-4 t+7-4 t^{-1} - t^{-2} +3 t^{-3} - t^{-4} }[/math]
Conway polynomial	[math]\displaystyle{ -z^8-5 z^6-3 z^4+3 z^2+1 }[/math]
2nd Alexander ideal (db, data sources)	[math]\displaystyle{ \{1\} }[/math]
Determinant and Signature	{ 5, 4 }
Jones polynomial	[math]\displaystyle{ -q^{11}+2 q^{10}-2 q^9+2 q^8-2 q^7+q^6-q^4+2 q^3-q^2+q }[/math]
HOMFLY-PT polynomial (db, data sources)	[math]\displaystyle{ -z^8 a^{-6} +z^6 a^{-4} -7 z^6 a^{-6} +z^6 a^{-8} +6 z^4 a^{-4} -16 z^4 a^{-6} +7 z^4 a^{-8} +10 z^2 a^{-4} -17 z^2 a^{-6} +12 z^2 a^{-8} -2 z^2 a^{-10} +5 a^{-4} -8 a^{-6} +6 a^{-8} -2 a^{-10} }[/math]
Kauffman polynomial (db, data sources)	[math]\displaystyle{ z^9 a^{-5} +z^9 a^{-7} +z^8 a^{-4} +3 z^8 a^{-6} +2 z^8 a^{-8} -6 z^7 a^{-5} -6 z^7 a^{-7} +z^7 a^{-9} +z^7 a^{-11} -7 z^6 a^{-4} -21 z^6 a^{-6} -15 z^6 a^{-8} +z^6 a^{-10} +2 z^6 a^{-12} +9 z^5 a^{-5} +6 z^5 a^{-7} -7 z^5 a^{-9} -3 z^5 a^{-11} +z^5 a^{-13} +16 z^4 a^{-4} +43 z^4 a^{-6} +31 z^4 a^{-8} -3 z^4 a^{-10} -7 z^4 a^{-12} -2 z^3 a^{-5} +5 z^3 a^{-7} +11 z^3 a^{-9} +z^3 a^{-11} -3 z^3 a^{-13} -15 z^2 a^{-4} -32 z^2 a^{-6} -22 z^2 a^{-8} -z^2 a^{-10} +4 z^2 a^{-12} -2 z a^{-5} -4 z a^{-7} -4 z a^{-9} -z a^{-11} +z a^{-13} +5 a^{-4} +8 a^{-6} +6 a^{-8} +2 a^{-10} }[/math]
The A2 invariant	[math]\displaystyle{ q^{-4} + q^{-6} + q^{-8} +2 q^{-10} + q^{-12} - q^{-14} - q^{-16} - q^{-18} -2 q^{-20} + q^{-22} +2 q^{-26} + q^{-32} -2 q^{-34} }[/math]
The G2 invariant	Data:K11n9/QuantumInvariant/G2/1,0

Further Quantum Invariants

K11n9 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["K11n9"];

In[4]:=

Alexander[K][t]

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

Out[4]=

[math]\displaystyle{ -t^4+3 t^3-t^2-4 t+7-4 t^{-1} - t^{-2} +3 t^{-3} - t^{-4} }[/math]

In[5]:=

Conway[K][z]

Out[5]=

[math]\displaystyle{ -z^8-5 z^6-3 z^4+3 z^2+1 }[/math]

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]=

[math]\displaystyle{ \{1\} }[/math]

In[7]:=

{KnotDet[K], KnotSignature[K]}

Out[7]=

{ 5, 4 }

In[8]:=

Jones[K][q]

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

Out[8]=

[math]\displaystyle{ -q^{11}+2 q^{10}-2 q^9+2 q^8-2 q^7+q^6-q^4+2 q^3-q^2+q }[/math]

In[9]:=

HOMFLYPT[K][a, z]

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

Out[9]=

[math]\displaystyle{ -z^8 a^{-6} +z^6 a^{-4} -7 z^6 a^{-6} +z^6 a^{-8} +6 z^4 a^{-4} -16 z^4 a^{-6} +7 z^4 a^{-8} +10 z^2 a^{-4} -17 z^2 a^{-6} +12 z^2 a^{-8} -2 z^2 a^{-10} +5 a^{-4} -8 a^{-6} +6 a^{-8} -2 a^{-10} }[/math]

In[10]:=

Kauffman[K][a, z]

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

Out[10]=

[math]\displaystyle{ z^9 a^{-5} +z^9 a^{-7} +z^8 a^{-4} +3 z^8 a^{-6} +2 z^8 a^{-8} -6 z^7 a^{-5} -6 z^7 a^{-7} +z^7 a^{-9} +z^7 a^{-11} -7 z^6 a^{-4} -21 z^6 a^{-6} -15 z^6 a^{-8} +z^6 a^{-10} +2 z^6 a^{-12} +9 z^5 a^{-5} +6 z^5 a^{-7} -7 z^5 a^{-9} -3 z^5 a^{-11} +z^5 a^{-13} +16 z^4 a^{-4} +43 z^4 a^{-6} +31 z^4 a^{-8} -3 z^4 a^{-10} -7 z^4 a^{-12} -2 z^3 a^{-5} +5 z^3 a^{-7} +11 z^3 a^{-9} +z^3 a^{-11} -3 z^3 a^{-13} -15 z^2 a^{-4} -32 z^2 a^{-6} -22 z^2 a^{-8} -z^2 a^{-10} +4 z^2 a^{-12} -2 z a^{-5} -4 z a^{-7} -4 z a^{-9} -z a^{-11} +z a^{-13} +5 a^{-4} +8 a^{-6} +6 a^{-8} +2 a^{-10} }[/math]

"Similar" Knots (within the Atlas)

Same Alexander/Conway Polynomial: {}

Same Jones Polynomial (up to mirroring, [math]\displaystyle{ q\leftrightarrow q^{-1} }[/math]): {}

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["K11n9"];

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]=

{ [math]\displaystyle{ -t^4+3 t^3-t^2-4 t+7-4 t^{-1} - t^{-2} +3 t^{-3} - t^{-4} }[/math], [math]\displaystyle{ -q^{11}+2 q^{10}-2 q^9+2 q^8-2 q^7+q^6-q^4+2 q^3-q^2+q }[/math] }

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]=

{}

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:

(3, 7)

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 [math]\displaystyle{ 12 }[/math] [math]\displaystyle{ 56 }[/math] [math]\displaystyle{ 72 }[/math] [math]\displaystyle{ 318 }[/math] [math]\displaystyle{ 58 }[/math] [math]\displaystyle{ 672 }[/math] [math]\displaystyle{ \frac{5264}{3} }[/math] [math]\displaystyle{ \frac{992}{3} }[/math] [math]\displaystyle{ 248 }[/math] [math]\displaystyle{ 288 }[/math] [math]\displaystyle{ 1568 }[/math] [math]\displaystyle{ 3816 }[/math] [math]\displaystyle{ 696 }[/math] [math]\displaystyle{ \frac{97551}{10} }[/math] [math]\displaystyle{ \frac{5054}{15} }[/math] [math]\displaystyle{ \frac{57542}{15} }[/math] [math]\displaystyle{ \frac{593}{6} }[/math] [math]\displaystyle{ \frac{4751}{10} }[/math]

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 [math]\displaystyle{ t^rq^j }[/math] are shown, along with their alternating sums [math]\displaystyle{ \chi }[/math] (fixed [math]\displaystyle{ j }[/math], alternation over [math]\displaystyle{ r }[/math]). The squares with yellow highlighting are those on the "critical diagonals", where [math]\displaystyle{ j-2r=s+1 }[/math] or [math]\displaystyle{ j-2r=s-1 }[/math], where [math]\displaystyle{ s= }[/math]4 is the signature of K11n9. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.

\   r    \    j   \ -2 -1 0 1 2 3 4 5 6 7 8 9 χ 23                       1 -1 21                     1   1 19                   1 1   0 17               1 2 1     0 15             1 2 1       0 13           1 2 2         -1 11         1 2 2           1 9       1 1 1             -1 7     1 1 1               1 5   1 2                   1 3                         0 1 1                       1

Integral Khovanov Homology (db, data source)

[math]\displaystyle{ \dim{\mathcal G}_{2r+i}\operatorname{KH}^r_{\mathbb Z} }[/math] [math]\displaystyle{ i=3 }[/math] [math]\displaystyle{ i=5 }[/math] [math]\displaystyle{ i=7 }[/math] [math]\displaystyle{ r=-2 }[/math] [math]\displaystyle{ {\mathbb Z} }[/math] [math]\displaystyle{ r=-1 }[/math] [math]\displaystyle{ {\mathbb Z}_2 }[/math] [math]\displaystyle{ {\mathbb Z} }[/math] [math]\displaystyle{ r=0 }[/math] [math]\displaystyle{ {\mathbb Z}^{2} }[/math] [math]\displaystyle{ {\mathbb Z} }[/math] [math]\displaystyle{ r=1 }[/math] [math]\displaystyle{ {\mathbb Z}\oplus{\mathbb Z}_2 }[/math] [math]\displaystyle{ {\mathbb Z} }[/math] [math]\displaystyle{ r=2 }[/math] [math]\displaystyle{ {\mathbb Z} }[/math] [math]\displaystyle{ {\mathbb Z}\oplus{\mathbb Z}_2 }[/math] [math]\displaystyle{ {\mathbb Z} }[/math] [math]\displaystyle{ r=3 }[/math] [math]\displaystyle{ {\mathbb Z}\oplus{\mathbb Z}_2 }[/math] [math]\displaystyle{ {\mathbb Z}^{2}\oplus{\mathbb Z}_2 }[/math] [math]\displaystyle{ {\mathbb Z} }[/math] [math]\displaystyle{ r=4 }[/math] [math]\displaystyle{ {\mathbb Z}^{2}\oplus{\mathbb Z}_2 }[/math] [math]\displaystyle{ {\mathbb Z}^{2}\oplus{\mathbb Z}_2 }[/math] [math]\displaystyle{ {\mathbb Z} }[/math] [math]\displaystyle{ r=5 }[/math] [math]\displaystyle{ {\mathbb Z}^{2}\oplus{\mathbb Z}_2 }[/math] [math]\displaystyle{ {\mathbb Z}^{2} }[/math] [math]\displaystyle{ {\mathbb Z} }[/math] [math]\displaystyle{ r=6 }[/math] [math]\displaystyle{ {\mathbb Z}\oplus{\mathbb Z}_2^{2} }[/math] [math]\displaystyle{ {\mathbb Z}^{2} }[/math] [math]\displaystyle{ r=7 }[/math] [math]\displaystyle{ {\mathbb Z}\oplus{\mathbb Z}_2 }[/math] [math]\displaystyle{ {\mathbb Z} }[/math] [math]\displaystyle{ r=8 }[/math] [math]\displaystyle{ {\mathbb Z}\oplus{\mathbb Z}_2 }[/math] [math]\displaystyle{ {\mathbb Z} }[/math] [math]\displaystyle{ r=9 }[/math] [math]\displaystyle{ {\mathbb Z}_2 }[/math] [math]\displaystyle{ {\mathbb Z} }[/math]

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.

K11n8 K11n10