© | Dror Bar-Natan: The Knot Atlas: The Rolfsen Knot Table:

1039 1041

KnotPlot

This page is passe. Go here instead!    The Alternating Knot 1040    Visit 1040's page at the Knot Server (KnotPlot driven, includes 3D interactive images!) Visit 1040's page at Knotilus! Acknowledgement

KnotPlot

PD Presentation:

X1425 X3,10,4,11 X11,1,12,20 X5,13,6,12 X7,17,8,16 X15,19,16,18 X19,15,20,14 X13,7,14,6 X17,9,18,8 X9,2,10,3

Gauss Code:

{-1, 10, -2, 1, -4, 8, -5, 9, -10, 2, -3, 4, -8, 7, -6, 5, -9, 6, -7, 3}

DT (Dowker-Thistlethwaite) Code:

4 10 12 16 2 20 6 18 8 14

Minimum Braid Representative: Length is 11, width is 4 Braid index is 4

A Morse Link Presentation:

3D Invariants:

Symmetry Type Unknotting Number 3-Genus Bridge/Super Bridge Index Nakanishi Index Reversible 2 3 2 / NotAvailable 1

Alexander Polynomial:

2t-3 - 8t-2 + 17t-1 - 21 + 17t - 8t2 + 2t3

Conway Polynomial:

1 + 3z2 + 4z4 + 2z6

Other knots with the same Alexander/Conway Polynomial:

{10103, ...}

Determinant and Signature:

{75, 2}

Jones Polynomial:

- q-2 + 3q-1 - 6 + 10q - 11q2 + 13q3 - 12q4 + 9q5 - 6q6 + 3q7 - q8

Other knots (up to mirrors) with the same Jones Polynomial:

{10103, ...}

A2 (sl(3)) Invariant:

- q-6 + q-4 - q-2 - 1 + 3q2 - q4 + 4q6 + q8 + q12 - 3q14 + 2q16 - q18 - q20 + q22 - q24

HOMFLY-PT Polynomial:

- a-6 - 2a-6z2 - a-6z4 + 3a-4z2 + 3a-4z4 + a-4z6 + 3a-2 + 4a-2z2 + 3a-2z4 + a-2z6 - 1 - 2z2 - z4

Kauffman Polynomial:

a-9z - 2a-9z3 + a-9z5 + 3a-8z2 - 6a-8z4 + 3a-8z6 + 2a-7z3 - 6a-7z5 + 4a-7z7 + a-6 + a-6z2 - 5a-6z4 + 3a-6z8 + 6a-5z3 - 13a-5z5 + 7a-5z7 + a-5z9 + a-4z2 - 2a-4z4 - 5a-4z6 + 6a-4z8 + 2a-3z + 3a-3z3 - 12a-3z5 + 7a-3z7 + a-3z9 - 3a-2 + 7a-2z2 - 9a-2z4 + a-2z6 + 3a-2z8 + 2a-1z - a-1z3 - 5a-1z5 + 4a-1z7 - 1 + 4z2 - 6z4 + 3z6 + az - 2az3 + az5

V2 and V3, the type 2 and 3 Vassiliev invariants:

{3, 4}

Khovanov Homology: (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 1040. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.)

trqj r = -3 r = -2 r = -1 r = 0 r = 1 r = 2 r = 3 r = 4 r = 5 r = 6 r = 7 j = 17                     1 j = 15                   2   j = 13                 4 1   j = 11               5 2     j = 9             7 4       j = 7           6 5         j = 5         5 7           j = 3       5 6             j = 1     2 6               j = -1   1 4                 j = -3   2                   j = -5 1

n	Coloured Jones Polynomial (in the (n+1)-dimensional representation of sl(2))
2	q-7 - 3q-6 + q-5 + 9q-4 - 17q-3 + 37q-1 - 44 - 14q + 86q2 - 70q3 - 42q4 + 132q5 - 79q6 - 71q7 + 150q8 - 67q9 - 83q10 + 130q11 - 38q12 - 71q13 + 82q14 - 12q15 - 43q16 + 35q17 - 16q19 + 9q20 + q21 - 3q22 + q23
3	- q-15 + 3q-14 - q-13 - 4q-12 - 2q-11 + 14q-10 + 3q-9 - 29q-8 - 11q-7 + 54q-6 + 30q-5 - 88q-4 - 70q-3 + 131q-2 + 132q-1 - 173 - 216q + 196q2 + 336q3 - 218q4 - 445q5 + 195q6 + 580q7 - 177q8 - 669q9 + 110q10 + 768q11 - 66q12 - 803q13 - 14q14 + 828q15 + 69q16 - 796q17 - 138q18 + 741q19 + 191q20 - 653q21 - 225q22 + 536q23 + 247q24 - 417q25 - 240q26 + 296q27 + 216q28 - 194q29 - 173q30 + 111q31 + 129q32 - 59q33 - 83q34 + 25q35 + 50q36 - 10q37 - 26q38 + 3q39 + 13q40 - 2q41 - 4q42 - q43 + 3q44 - q45
4	q-26 - 3q-25 + q-24 + 4q-23 - 3q-22 + 5q-21 - 17q-20 + 5q-19 + 25q-18 - 10q-17 + 12q-16 - 74q-15 + 7q-14 + 103q-13 + 9q-12 + 32q-11 - 252q-10 - 58q-9 + 268q-8 + 167q-7 + 171q-6 - 634q-5 - 371q-4 + 423q-3 + 583q-2 + 675q-1 - 1120 - 1103q + 264q2 + 1165q3 + 1758q4 - 1372q5 - 2156q6 - 456q7 + 1578q8 + 3258q9 - 1107q10 - 3121q11 - 1621q12 + 1538q13 + 4702q14 - 395q15 - 3639q16 - 2814q17 + 1077q18 + 5652q19 + 459q20 - 3610q21 - 3674q22 + 385q23 + 5924q24 + 1222q25 - 3094q26 - 4043q27 - 399q28 + 5480q29 + 1794q30 - 2167q31 - 3872q32 - 1153q33 + 4381q34 + 2039q35 - 1014q36 - 3136q37 - 1646q38 + 2866q39 + 1818q40 + q41 - 2023q42 - 1648q43 + 1425q44 + 1203q45 + 510q46 - 945q47 - 1190q48 + 486q49 + 534q50 + 498q51 - 271q52 - 616q53 + 105q54 + 125q55 + 268q56 - 24q57 - 230q58 + 24q59 - 4q60 + 93q61 + 11q62 - 66q63 + 14q64 - 12q65 + 22q66 + 5q67 - 16q68 + 5q69 - 3q70 + 4q71 + q72 - 3q73 + q74

Computer Talk. The data above can be recomputed by Mathematica using the package KnotTheory`. Following setup, the sample Mathematica session below reproduces most of the above data (Mathematica system prompts in blue, human input in red, Mathematica output in black):

In[1]:=	<< KnotTheory`
Loading KnotTheory` (version of August 30, 2005, 10:15:35)...
In[2]:=	PD[Knot[10, 40]]
Out[2]=	PD[X[1, 4, 2, 5], X[3, 10, 4, 11], X[11, 1, 12, 20], X[5, 13, 6, 12], > X[7, 17, 8, 16], X[15, 19, 16, 18], X[19, 15, 20, 14], X[13, 7, 14, 6], > X[17, 9, 18, 8], X[9, 2, 10, 3]]
In[3]:=	GaussCode[Knot[10, 40]]
Out[3]=	GaussCode[-1, 10, -2, 1, -4, 8, -5, 9, -10, 2, -3, 4, -8, 7, -6, 5, -9, 6, -7, > 3]
In[4]:=	DTCode[Knot[10, 40]]
Out[4]=	DTCode[4, 10, 12, 16, 2, 20, 6, 18, 8, 14]
In[5]:=	br = BR[Knot[10, 40]]
Out[5]=	BR[4, {1, 1, 1, 2, -1, 2, 2, -3, 2, -3, -3}]
In[6]:=	{First[br], Crossings[br]}
Out[6]=	{4, 11}
In[7]:=	BraidIndex[Knot[10, 40]]
Out[7]=	4
In[8]:=	Show[DrawMorseLink[Knot[10, 40]]]
Out[8]=	-Graphics-
In[9]:=	#[Knot[10, 40]]& /@ {SymmetryType, UnknottingNumber, ThreeGenus, BridgeIndex, SuperBridgeIndex, NakanishiIndex}
Out[9]=	{Reversible, 2, 3, 2, NotAvailable, 1}
In[10]:=	alex = Alexander[Knot[10, 40]][t]
Out[10]=	2 8 17 2 3 -21 + -- - -- + -- + 17 t - 8 t + 2 t 3 2 t t t
In[11]:=	Conway[Knot[10, 40]][z]
Out[11]=	2 4 6 1 + 3 z + 4 z + 2 z
In[12]:=	Select[AllKnots[], (alex === Alexander[#][t])&]
Out[12]=	{Knot[10, 40], Knot[10, 103]}
In[13]:=	{KnotDet[Knot[10, 40]], KnotSignature[Knot[10, 40]]}
Out[13]=	{75, 2}
In[14]:=	Jones[Knot[10, 40]][q]
Out[14]=	-2 3 2 3 4 5 6 7 8 -6 - q + - + 10 q - 11 q + 13 q - 12 q + 9 q - 6 q + 3 q - q q
In[15]:=	Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&]
Out[15]=	{Knot[10, 40], Knot[10, 103]}
In[16]:=	A2Invariant[Knot[10, 40]][q]
Out[16]=	-6 -4 -2 2 4 6 8 12 14 16 18 -1 - q + q - q + 3 q - q + 4 q + q + q - 3 q + 2 q - q - 20 22 24 > q + q - q
In[17]:=	HOMFLYPT[Knot[10, 40]][a, z]
Out[17]=	2 2 2 4 4 4 6 6 -6 3 2 2 z 3 z 4 z 4 z 3 z 3 z z z -1 - a + -- - 2 z - ---- + ---- + ---- - z - -- + ---- + ---- + -- + -- 2 6 4 2 6 4 2 4 2 a a a a a a a a a
In[18]:=	Kauffman[Knot[10, 40]][a, z]
Out[18]=	2 2 2 2 3 -6 3 z 2 z 2 z 2 3 z z z 7 z 2 z -1 + a - -- + -- + --- + --- + a z + 4 z + ---- + -- + -- + ---- - ---- + 2 9 3 a 8 6 4 2 9 a a a a a a a a 3 3 3 3 4 4 4 4 5 2 z 6 z 3 z z 3 4 6 z 5 z 2 z 9 z z > ---- + ---- + ---- - -- - 2 a z - 6 z - ---- - ---- - ---- - ---- + -- - 7 5 3 a 8 6 4 2 9 a a a a a a a a 5 5 5 5 6 6 6 7 6 z 13 z 12 z 5 z 5 6 3 z 5 z z 4 z > ---- - ----- - ----- - ---- + a z + 3 z + ---- - ---- + -- + ---- + 7 5 3 a 8 4 2 7 a a a a a a a 7 7 7 8 8 8 9 9 7 z 7 z 4 z 3 z 6 z 3 z z z > ---- + ---- + ---- + ---- + ---- + ---- + -- + -- 5 3 a 6 4 2 5 3 a a a a a a a
In[19]:=	{Vassiliev[2][Knot[10, 40]], Vassiliev[3][Knot[10, 40]]}
Out[19]=	{3, 4}
In[20]:=	Kh[Knot[10, 40]][q, t]
Out[20]=	3 1 2 1 4 2 q 3 5 5 2 6 q + 5 q + ----- + ----- + ---- + --- + --- + 6 q t + 5 q t + 7 q t + 5 3 3 2 2 q t t q t q t q t 7 2 7 3 9 3 9 4 11 4 11 5 13 5 > 6 q t + 5 q t + 7 q t + 4 q t + 5 q t + 2 q t + 4 q t + 13 6 15 6 17 7 > q t + 2 q t + q t
In[21]:=	ColouredJones[Knot[10, 40], 2][q]
Out[21]=	-7 3 -5 9 17 37 2 3 4 5 -44 + q - -- + q + -- - -- + -- - 14 q + 86 q - 70 q - 42 q + 132 q - 6 4 3 q q q q 6 7 8 9 10 11 12 13 > 79 q - 71 q + 150 q - 67 q - 83 q + 130 q - 38 q - 71 q + 14 15 16 17 19 20 21 22 23 > 82 q - 12 q - 43 q + 35 q - 16 q + 9 q + q - 3 q + q

Dror Bar-Natan: The Knot Atlas: The Rolfsen Knot Table: The Knot 1040

1039 1041