K11a255

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K11a254

K11a256

1 Knot presentations
2 Three dimensional invariants
3 Four dimensional invariants
4 Polynomial invariants
5 "Similar" Knots (within the Atlas)
6 Vassiliev invariants
7 Khovanov Homology
8 Computer Talk
9 Modifying This Page

(Knotscape image)

See the full Hoste-Thistlethwaite Table of 11 Crossing Knots.

Visit K11a255's page at Knotilus!

Visit K11a255's page at the original Knot Atlas!

[edit K11a255 Quick Notes]

[edit K11a255 Further Notes and Views]

[edit] Knot presentations

Planar diagram presentation	X₆₂₇₁ X₈₃₉₄ X_12,6,13,5 X_20,8,21,7 X_16,9,17,10 X_18,11,19,12 X_22,13,1,14 X_4,16,5,15 X_10,17,11,18 X_2,19,3,20 X_14,21,15,22
Gauss code	1, -10, 2, -8, 3, -1, 4, -2, 5, -9, 6, -3, 7, -11, 8, -5, 9, -6, 10, -4, 11, -7
Dowker-Thistlethwaite code	6 8 12 20 16 18 22 4 10 2 14

A Braid Representative

A Morse Link Presentation

[edit] Three dimensional invariants

Symmetry type	Chiral
Unknotting number	1
3-genus	4
Bridge index	Missing
Super bridge index	Missing
Nakanishi index	Missing
Maximal Thurston-Bennequin number	Data:K11a255/ThurstonBennequinNumber
Hyperbolic Volume	17.3074
A-Polynomial	See Data:K11a255/A-polynomial

[edit Notes for K11a255's three dimensional invariants]

[edit] Four dimensional invariants

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

[edit Notes for K11a255's four dimensional invariants]

[edit] Polynomial invariants

Alexander polynomial	$- t 4 + 6 t 3 -17 t 2 + 30 t -35 + 30 t -1 -17 t -2 + 6 t -3 - t -4$
Conway polynomial	$- z 8 -2 z 6 - z 4 + 1$
2nd Alexander ideal (db, data sources)	${1}$
Determinant and Signature	{ 143, -2 }
Jones polynomial	$q 3 -4 q 2 + 9 q -14 + 20 q -1 -23 q -2 + 23 q -3 -20 q -4 + 15 q -5 -9 q -6 + 4 q -7 - q -8$
HOMFLY-PT polynomial (db, data sources)	$- a 2 z 8 + 2 a 4 z 6 -5 a 2 z 6 + z 6 - a 6 z 4 + 7 a 4 z 4 -10 a 2 z 4 + 3 z 4 -2 a 6 z 2 + 8 a 4 z 2 -9 a 2 z 2 + 3 z 2 - a 6 + 3 a 4 -3 a 2 + 2$
Kauffman polynomial (db, data sources)	$3 a 4 z 10 + 3 a 2 z 10 + 8 a 5 z 9 + 16 a 3 z 9 + 8 a z 9 + 10 a 6 z 8 + 11 a 4 z 8 + 9 a 2 z 8 + 8 z 8 + 8 a 7 z 7 -9 a 5 z 7 -40 a 3 z 7 -19 a z 7 + 4 z 7 a -1 + 4 a 8 z 6 -16 a 6 z 6 -39 a 4 z 6 -42 a 2 z 6 + z 6 a -2 -22 z 6 + a 9 z 5 -12 a 7 z 5 + a 5 z 5 + 38 a 3 z 5 + 15 a z 5 -9 z 5 a -1 -5 a 8 z 4 + 10 a 6 z 4 + 44 a 4 z 4 + 50 a 2 z 4 -2 z 4 a -2 + 19 z 4 - a 9 z 3 + 5 a 7 z 3 + 2 a 5 z 3 -13 a 3 z 3 -6 a z 3 + 3 z 3 a -1 + a 8 z 2 -5 a 6 z 2 -20 a 4 z 2 -22 a 2 z 2 -8 z 2 - a 7 z - a 5 z + a 3 z + a z + a 6 + 3 a 4 + 3 a 2 + 2$
The A2 invariant	$- q 24 + q 22 -2 q 18 + 4 q 16 -3 q 14 + 2 q 12 + q 10 -3 q 8 + 4 q 6 -5 q 4 + 4 q 2 - q -2 + 3 q -4 -2 q -6 + q -8$
The G2 invariant	Data:K11a255/QuantumInvariant/G2/1,0

Further Quantum Invariants

K11a255 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["K11a255"];

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

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

Out[4]= $- t 4 + 6 t 3 -17 t 2 + 30 t -35 + 30 t -1 -17 t -2 + 6 t -3 - t -4$

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

Out[5]= $- z 8 -2 z 6 - z 4 + 1$

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]= { 143, -2 }

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

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

Out[8]= $q 3 -4 q 2 + 9 q -14 + 20 q -1 -23 q -2 + 23 q -3 -20 q -4 + 15 q -5 -9 q -6 + 4 q -7 - q -8$

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

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

Out[9]= $- a 2 z 8 + 2 a 4 z 6 -5 a 2 z 6 + z 6 - a 6 z 4 + 7 a 4 z 4 -10 a 2 z 4 + 3 z 4 -2 a 6 z 2 + 8 a 4 z 2 -9 a 2 z 2 + 3 z 2 - a 6 + 3 a 4 -3 a 2 + 2$

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

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

Out[10]= $3 a 4 z 10 + 3 a 2 z 10 + 8 a 5 z 9 + 16 a 3 z 9 + 8 a z 9 + 10 a 6 z 8 + 11 a 4 z 8 + 9 a 2 z 8 + 8 z 8 + 8 a 7 z 7 -9 a 5 z 7 -40 a 3 z 7 -19 a z 7 + 4 z 7 a -1 + 4 a 8 z 6 -16 a 6 z 6 -39 a 4 z 6 -42 a 2 z 6 + z 6 a -2 -22 z 6 + a 9 z 5 -12 a 7 z 5 + a 5 z 5 + 38 a 3 z 5 + 15 a z 5 -9 z 5 a -1 -5 a 8 z 4 + 10 a 6 z 4 + 44 a 4 z 4 + 50 a 2 z 4 -2 z 4 a -2 + 19 z 4 - a 9 z 3 + 5 a 7 z 3 + 2 a 5 z 3 -13 a 3 z 3 -6 a z 3 + 3 z 3 a -1 + a 8 z 2 -5 a 6 z 2 -20 a 4 z 2 -22 a 2 z 2 -8 z 2 - a 7 z - a 5 z + a 3 z + a z + a 6 + 3 a 4 + 3 a 2 + 2$

[edit] "Similar" Knots (within the Atlas)

Same Alexander/Conway Polynomial: {K11a79,}

Same Jones Polynomial (up to mirroring, $q\leftrightarrow q^{-1}$ ): {K11a79,}

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["K11a255"];

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]= { $- t 4 + 6 t 3 -17 t 2 + 30 t -35 + 30 t -1 -17 t -2 + 6 t -3 - t -4$ , $q 3 -4 q 2 + 9 q -14 + 20 q -1 -23 q -2 + 23 q -3 -20 q -4 + 15 q -5 -9 q -6 + 4 q -7 - q -8$ }

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]= {K11a79,}

In[6]:= DeleteCases[ Select[ AllKnots[], (J === Jones[#][q] || (J /. q -> 1/q) === Jones[#][q]) & ], K ]

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

Out[6]= {K11a79,}

[edit] Vassiliev invariants

V₂ and V₃:

(0, -1)

[edit] Khovanov Homology

The coefficients of the monomials

t r q j

are shown, along with their alternating sums

χ

(fixed

j

, alternation over

r

). The squares with yellow highlighting are those on the "critical diagonals", where

j -2 r = s + 1

j -2 r = s -1

, where

s =

-2 is the signature of K11a255. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.

\		r
	\
j		\

-7

-6

-5

-4

-3

-2

-1

-3

-5

-1

-3

-5

-7

-9

-5

-11

-13

-5

-15

-17

-1

Integral Khovanov Homology

(db, data source)

$\dim{\mathcal G}_{2r+i}\operatorname{KH}^r_{\mathbb Z}$	$i = -3$	$i = -1$
$r = -7$	${\mathbb Z}$
$r = -6$	${\mathbb Z}^{3}\oplus{\mathbb Z}_2$	${\mathbb Z}$
$r = -5$	${\mathbb Z}^{6}\oplus{\mathbb Z}_2^{3}$	${\mathbb Z}^{3}$
$r = -4$	${\mathbb Z}^{9}\oplus{\mathbb Z}_2^{6}$	${\mathbb Z}^{6}$
$r = -3$	${\mathbb Z}^{11}\oplus{\mathbb Z}_2^{9}$	${\mathbb Z}^{9}$
$r = -2$	${\mathbb Z}^{12}\oplus{\mathbb Z}_2^{11}$	${\mathbb Z}^{11}$
$r = -1$	${\mathbb Z}^{11}\oplus{\mathbb Z}_2^{12}$	${\mathbb Z}^{12}$
$r = 0$	${\mathbb Z}^{9}\oplus{\mathbb Z}_2^{11}$	${\mathbb Z}^{12}$
$r = 1$	${\mathbb Z}^{6}\oplus{\mathbb Z}_2^{8}$	${\mathbb Z}^{8}$
$r = 2$	${\mathbb Z}^{3}\oplus{\mathbb Z}_2^{6}$	${\mathbb Z}^{6}$
$r = 3$	${\mathbb Z}\oplus{\mathbb Z}_2^{3}$	${\mathbb Z}^{3}$
$r = 4$	${\mathbb Z}_2$	${\mathbb Z}$