K11a261

K11a260

K11a262

(Knotscape image)	See the full Hoste-Thistlethwaite Table of 11 Crossing Knots. Visit K11a261 at Knotilus!

Knot presentations

Planar diagram presentation	X6271 X8394 X14,5,15,6 X16,8,17,7 X4,9,5,10 X18,11,19,12 X20,13,21,14 X2,15,3,16 X22,18,1,17 X12,19,13,20 X10,21,11,22
Gauss code	1, -8, 2, -5, 3, -1, 4, -2, 5, -11, 6, -10, 7, -3, 8, -4, 9, -6, 10, -7, 11, -9
Dowker-Thistlethwaite code	6 8 14 16 4 18 20 2 22 12 10

A Braid Representative
A Morse Link Presentation

Three dimensional invariants

Symmetry type Chiral Unknotting number 2 3-genus 4 Bridge index 3 Super bridge index Missing Nakanishi index Missing Maximal Thurston-Bennequin number Data:K11a261/ThurstonBennequinNumber Hyperbolic Volume 15.9423 A-Polynomial See Data:K11a261/A-polynomial

[edit Notes for K11a261's three dimensional invariants]

Four dimensional invariants

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

[edit Notes for K11a261's four dimensional invariants]

Polynomial invariants

Alexander polynomial	$t^{4}-6t^{3}+16t^{2}-26t+31-26t^{-1}+16t^{-2}-6t^{-3}+t^{-4}$
Conway polynomial	$z^{8}+2z^{6}+1$
2nd Alexander ideal (db, data sources)	$\{1\}$
Determinant and Signature	{ 129, -4 }
Jones polynomial	$-q+4-7q^{-1}+13q^{-2}-17q^{-3}+20q^{-4}-21q^{-5}+18q^{-6}-14q^{-7}+9q^{-8}-4q^{-9}+q^{-10}$
HOMFLY-PT polynomial (db, data sources)	$z^{4}a^{8}+2z^{2}a^{8}+a^{8}-2z^{6}a^{6}-7z^{4}a^{6}-7z^{2}a^{6}-2a^{6}+z^{8}a^{4}+5z^{6}a^{4}+9z^{4}a^{4}+6z^{2}a^{4}-z^{6}a^{2}-3z^{4}a^{2}-z^{2}a^{2}+2a^{2}$
Kauffman polynomial (db, data sources)	$z^{4}a^{12}+4z^{5}a^{11}-z^{3}a^{11}+9z^{6}a^{10}-8z^{4}a^{10}+3z^{2}a^{10}+13z^{7}a^{9}-18z^{5}a^{9}+10z^{3}a^{9}-2za^{9}+12z^{8}a^{8}-15z^{6}a^{8}+3z^{4}a^{8}-2z^{2}a^{8}+a^{8}+7z^{9}a^{7}+z^{7}a^{7}-24z^{5}a^{7}+14z^{3}a^{7}-2za^{7}+2z^{10}a^{6}+15z^{8}a^{6}-48z^{6}a^{6}+39z^{4}a^{6}-15z^{2}a^{6}+2a^{6}+12z^{9}a^{5}-28z^{7}a^{5}+12z^{5}a^{5}+2za^{5}+2z^{10}a^{4}+7z^{8}a^{4}-39z^{6}a^{4}+44z^{4}a^{4}-14z^{2}a^{4}+5z^{9}a^{3}-15z^{7}a^{3}+11z^{5}a^{3}-z^{3}a^{3}+2za^{3}+4z^{8}a^{2}-15z^{6}a^{2}+17z^{4}a^{2}-4z^{2}a^{2}-2a^{2}+z^{7}a-3z^{5}a+2z^{3}a$
The A2 invariant	$q^{30}-q^{28}+2q^{24}-3q^{22}+3q^{20}-2q^{18}-q^{16}+q^{14}-5q^{12}+4q^{10}-2q^{8}+3q^{6}+3q^{4}-q^{2}+2-q^{-2}$
The G2 invariant	Data:K11a261/QuantumInvariant/G2/1,0

Further Quantum Invariants

K11a261 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["K11a261"];

In[4]:=

Alexander[K][t]

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

Out[4]=

$t^{4}-6t^{3}+16t^{2}-26t+31-26t^{-1}+16t^{-2}-6t^{-3}+t^{-4}$

In[5]:=

Conway[K][z]

Out[5]=

$z^{8}+2z^{6}+1$

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]=

{ 129, -4 }

In[8]:=

Jones[K][q]

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

Out[8]=

$-q+4-7q^{-1}+13q^{-2}-17q^{-3}+20q^{-4}-21q^{-5}+18q^{-6}-14q^{-7}+9q^{-8}-4q^{-9}+q^{-10}$

In[9]:=

HOMFLYPT[K][a, z]

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

Out[9]=

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

In[10]:=

Kauffman[K][a, z]

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

Out[10]=

$z^{4}a^{12}+4z^{5}a^{11}-z^{3}a^{11}+9z^{6}a^{10}-8z^{4}a^{10}+3z^{2}a^{10}+13z^{7}a^{9}-18z^{5}a^{9}+10z^{3}a^{9}-2za^{9}+12z^{8}a^{8}-15z^{6}a^{8}+3z^{4}a^{8}-2z^{2}a^{8}+a^{8}+7z^{9}a^{7}+z^{7}a^{7}-24z^{5}a^{7}+14z^{3}a^{7}-2za^{7}+2z^{10}a^{6}+15z^{8}a^{6}-48z^{6}a^{6}+39z^{4}a^{6}-15z^{2}a^{6}+2a^{6}+12z^{9}a^{5}-28z^{7}a^{5}+12z^{5}a^{5}+2za^{5}+2z^{10}a^{4}+7z^{8}a^{4}-39z^{6}a^{4}+44z^{4}a^{4}-14z^{2}a^{4}+5z^{9}a^{3}-15z^{7}a^{3}+11z^{5}a^{3}-z^{3}a^{3}+2za^{3}+4z^{8}a^{2}-15z^{6}a^{2}+17z^{4}a^{2}-4z^{2}a^{2}-2a^{2}+z^{7}a-3z^{5}a+2z^{3}a$

"Similar" Knots (within the Atlas)

Same Alexander/Conway Polynomial: {}

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["K11a261"];

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]=

{ $t^{4}-6t^{3}+16t^{2}-26t+31-26t^{-1}+16t^{-2}-6t^{-3}+t^{-4}$, $-q+4-7q^{-1}+13q^{-2}-17q^{-3}+20q^{-4}-21q^{-5}+18q^{-6}-14q^{-7}+9q^{-8}-4q^{-9}+q^{-10}$ }

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:

(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 $0$ $16$ $0$ $-64$ $0$ $0$ ${\frac {352}{3}}$ $-{\frac {128}{3}}$ $16$ $0$ $128$ $0$ $0$ $160$ ${\frac {320}{3}}$ $192$ $-32$ $32$

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 $s=$-4 is the signature of K11a261. 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 3                       1 -1 1                     3   3 -1                   4 1   -3 -3                 9 3     6 -5               9 5       -4 -7             11 8         3 -9           10 9           -1 -11         8 11             -3 -13       6 10               4 -15     3 8                 -5 -17   1 6                   5 -19   3                     -3 -21 1                       1

Integral Khovanov Homology (db, data source)

$\dim {\mathcal {G}}_{2r+i}\operatorname {KH} _{\mathbb {Z} }^{r}$ $i=-5$ $i=-3$ $r=-8$ ${\mathbb {Z} }$ $r=-7$ ${\mathbb {Z} }^{3}\oplus {\mathbb {Z} }_{2}$ ${\mathbb {Z} }$ $r=-6$ ${\mathbb {Z} }^{6}\oplus {\mathbb {Z} }_{2}^{3}$ ${\mathbb {Z} }^{3}$ $r=-5$ ${\mathbb {Z} }^{8}\oplus {\mathbb {Z} }_{2}^{6}$ ${\mathbb {Z} }^{6}$ $r=-4$ ${\mathbb {Z} }^{10}\oplus {\mathbb {Z} }_{2}^{8}$ ${\mathbb {Z} }^{8}$ $r=-3$ ${\mathbb {Z} }^{11}\oplus {\mathbb {Z} }_{2}^{10}$ ${\mathbb {Z} }^{10}$ $r=-2$ ${\mathbb {Z} }^{9}\oplus {\mathbb {Z} }_{2}^{11}$ ${\mathbb {Z} }^{11}$ $r=-1$ ${\mathbb {Z} }^{8}\oplus {\mathbb {Z} }_{2}^{9}$ ${\mathbb {Z} }^{9}$ $r=0$ ${\mathbb {Z} }^{5}\oplus {\mathbb {Z} }_{2}^{8}$ ${\mathbb {Z} }^{9}$ $r=1$ ${\mathbb {Z} }^{3}\oplus {\mathbb {Z} }_{2}^{4}$ ${\mathbb {Z} }^{4}$ $r=2$ ${\mathbb {Z} }\oplus {\mathbb {Z} }_{2}^{3}$ ${\mathbb {Z} }^{3}$ $r=3$ ${\mathbb {Z} }_{2}$ ${\mathbb {Z} }$

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.

K11a260 K11a262