K11a195

(Knotscape image)	See the full Hoste-Thistlethwaite Table of 11 Crossing Knots. Visit K11a195 at Knotilus!
	[edit K11a195 Quick Notes]

[edit K11a195 Further Notes and Views]

Knot presentations

Planar diagram presentation	X₄₂₅₁ X_12,3,13,4 X_14,6,15,5 X_20,7,21,8 X_18,9,19,10 X_16,11,17,12 X_2,13,3,14 X_22,16,1,15 X_10,17,11,18 X_8,19,9,20 X_6,21,7,22
Gauss code	1, -7, 2, -1, 3, -11, 4, -10, 5, -9, 6, -2, 7, -3, 8, -6, 9, -5, 10, -4, 11, -8
Dowker-Thistlethwaite code	4 12 14 20 18 16 2 22 10 8 6

A Braid Representative	{{{braid_table}}}
A Morse Link Presentation

Three dimensional invariants

Symmetry type	Reversible
Unknotting number	1
3-genus	2
Bridge index	2
Super bridge index	Missing
Nakanishi index	Missing
Maximal Thurston-Bennequin number	Data:K11a195/ThurstonBennequinNumber
Hyperbolic Volume	9.31337
A-Polynomial	See Data:K11a195/A-polynomial

[edit Notes for K11a195's three dimensional invariants]

Four dimensional invariants

Smooth 4 genus	Missing
Topological 4 genus	Missing
Concordance genus	$2$
Rasmussen s-Invariant	0

[edit Notes for K11a195's four dimensional invariants]

Polynomial invariants

Alexander polynomial	$3t^{2}-13t+21-13t^{-1}+3t^{-2}$
Conway polynomial	$3z^{4}-z^{2}+1$
2nd Alexander ideal (db, data sources)	$\{1\}$
Determinant and Signature	{ 53, 0 }
Jones polynomial	$-q^{3}+3q^{2}-4q+6-7q^{-1}+8q^{-2}-7q^{-3}+6q^{-4}-5q^{-5}+3q^{-6}-2q^{-7}+q^{-8}$
HOMFLY-PT polynomial (db, data sources)	$a^{8}-2z^{2}a^{6}-2a^{6}+z^{4}a^{4}+z^{2}a^{4}+a^{4}+z^{4}a^{2}+z^{4}+z^{2}+1-z^{2}a^{-2}$
Kauffman polynomial (db, data sources)	$a^{6}z^{10}+a^{4}z^{10}+2a^{7}z^{9}+5a^{5}z^{9}+3a^{3}z^{9}+a^{8}z^{8}-2a^{6}z^{8}+a^{4}z^{8}+4a^{2}z^{8}-12a^{7}z^{7}-26a^{5}z^{7}-10a^{3}z^{7}+4az^{7}-6a^{8}z^{6}-10a^{6}z^{6}-19a^{4}z^{6}-11a^{2}z^{6}+4z^{6}+23a^{7}z^{5}+42a^{5}z^{5}+9a^{3}z^{5}-6az^{5}+4z^{5}a^{-1}+11a^{8}z^{4}+26a^{6}z^{4}+29a^{4}z^{4}+8a^{2}z^{4}+3z^{4}a^{-2}-3z^{4}-17a^{7}z^{3}-27a^{5}z^{3}-6a^{3}z^{3}-3z^{3}a^{-1}+z^{3}a^{-3}-7a^{8}z^{2}-16a^{6}z^{2}-12a^{4}z^{2}-3a^{2}z^{2}-2z^{2}a^{-2}-2z^{2}+4a^{7}z+7a^{5}z+3a^{3}z+a^{8}+2a^{6}+a^{4}+1$
The A2 invariant	Data:K11a195/QuantumInvariant/A2/1,0
The G2 invariant	Data:K11a195/QuantumInvariant/G2/1,0

Further Quantum Invariants

K11a195 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.

In[3]:= K = Knot["K11a195"];

In[4]:= Alexander[K][t]

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

Out[4]= $3t^{2}-13t+21-13t^{-1}+3t^{-2}$

In[5]:= Conway[K][z]

Out[5]= $3z^{4}-z^{2}+1$

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]= { 53, 0 }

In[8]:= Jones[K][q]

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

Out[8]= $-q^{3}+3q^{2}-4q+6-7q^{-1}+8q^{-2}-7q^{-3}+6q^{-4}-5q^{-5}+3q^{-6}-2q^{-7}+q^{-8}$

In[9]:= HOMFLYPT[K][a, z]

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

Out[9]= $a^{8}-2z^{2}a^{6}-2a^{6}+z^{4}a^{4}+z^{2}a^{4}+a^{4}+z^{4}a^{2}+z^{4}+z^{2}+1-z^{2}a^{-2}$

In[10]:= Kauffman[K][a, z]

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

Out[10]= $a^{6}z^{10}+a^{4}z^{10}+2a^{7}z^{9}+5a^{5}z^{9}+3a^{3}z^{9}+a^{8}z^{8}-2a^{6}z^{8}+a^{4}z^{8}+4a^{2}z^{8}-12a^{7}z^{7}-26a^{5}z^{7}-10a^{3}z^{7}+4az^{7}-6a^{8}z^{6}-10a^{6}z^{6}-19a^{4}z^{6}-11a^{2}z^{6}+4z^{6}+23a^{7}z^{5}+42a^{5}z^{5}+9a^{3}z^{5}-6az^{5}+4z^{5}a^{-1}+11a^{8}z^{4}+26a^{6}z^{4}+29a^{4}z^{4}+8a^{2}z^{4}+3z^{4}a^{-2}-3z^{4}-17a^{7}z^{3}-27a^{5}z^{3}-6a^{3}z^{3}-3z^{3}a^{-1}+z^{3}a^{-3}-7a^{8}z^{2}-16a^{6}z^{2}-12a^{4}z^{2}-3a^{2}z^{2}-2z^{2}a^{-2}-2z^{2}+4a^{7}z+7a^{5}z+3a^{3}z+a^{8}+2a^{6}+a^{4}+1$

"Similar" Knots (within the Atlas)

Same Alexander/Conway Polynomial: {K11n114,}

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.

In[3]:= K = Knot["K11a195"];

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]= { $3t^{2}-13t+21-13t^{-1}+3t^{-2}$ , $-q^{3}+3q^{2}-4q+6-7q^{-1}+8q^{-2}-7q^{-3}+6q^{-4}-5q^{-5}+3q^{-6}-2q^{-7}+q^{-8}$ }

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]= {K11n114,}

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, 3)

V_2,1 through V_6,9:

V_2,1

V_3,1

V_4,1

V_4,2

V_4,3

V_5,1

V_5,2

V_5,3

V_5,4

V_6,1

V_6,2

V_6,3

V_6,4

V_6,5

V_6,6

V_6,7

V_6,8

V_6,9

-4

24

8

-{\frac {254}{3}}

-{\frac {58}{3}}

-96

112

-64

120

-{\frac {32}{3}}

288

{\frac {1016}{3}}

{\frac {232}{3}}

{\frac {16049}{30}}

{\frac {7222}{15}}

-{\frac {5702}{45}}

-{\frac {2513}{18}}

-{\frac {1231}{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^{r}q^{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=

0 is the signature of K11a195. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.

\		r
	\
j		\

-8

-7

-6

-5

-4

-3

-2

-1

0

1

2

3

χ

7

1

-1

5

2

3

2

1

-1

1

4

2

-1

4

3

-1

-3

4

3

1

-5

3

4

1

-7

3

4

-1

-9

2

3

1

-11

1

3

-2

-13

1

2

1

-15

1

-1

-17

1

Integral Khovanov Homology

(db, data source)

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