© | Dror Bar-Natan: The Knot Atlas: 11 Crossing Knots:

K11a337 K11a339

Knotscape

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DrawMorseLink

PD Presentation:

X6271 X14,4,15,3 X16,6,17,5 X20,8,21,7 X22,10,1,9 X18,12,19,11 X2,14,3,13 X4,16,5,15 X10,18,11,17 X12,20,13,19 X8,22,9,21

Gauss Code:

{1, -7, 2, -8, 3, -1, 4, -11, 5, -9, 6, -10, 7, -2, 8, -3, 9, -6, 10, -4, 11, -5}

DT (Dowker-Thistlethwaite) Code:

6 14 16 20 22 18 2 4 10 12 8

Alexander Polynomial:

2t-4 - 5t-3 + 9t-2 - 12t-1 + 13 - 12t + 9t2 - 5t3 + 2t4

Conway Polynomial:

1 + 11z2 + 19z4 + 11z6 + 2z8

Other knots with the same Alexander/Conway Polynomial:

{...}

Determinant and Signature:

{69, 8}

Jones Polynomial:

q4 - q5 + 4q6 - 6q7 + 8q8 - 10q9 + 11q10 - 10q11 + 8q12 - 6q13 + 3q14 - q15

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

{...}

A2 (sl(3)) Invariant:

q14 + 3q18 + 2q22 - q26 + 2q28 - 2q30 + 2q32 - 2q34 - q36 - q40 + q42 - q44

HOMFLY-PT Polynomial:

- a-12 - 4a-12z2 - 4a-12z4 - a-12z6 - 2a-10 - a-10z2 + 6a-10z4 + 5a-10z6 + a-10z8 + 4a-8 + 16a-8z2 + 17a-8z4 + 7a-8z6 + a-8z8

Kauffman Polynomial:

a-19z3 + 3a-18z4 + 2a-17z - 5a-17z3 + 6a-17z5 + 4a-16z2 - 11a-16z4 + 8a-16z6 - 2a-15z + 5a-15z3 - 14a-15z5 + 8a-15z7 - a-14z2 + a-14z4 - 11a-14z6 + 6a-14z8 - 3a-13z + 13a-13z3 - 14a-13z5 - 2a-13z7 + 3a-13z9 - a-12 + 5a-12z2 + 6a-12z4 - 13a-12z6 + 2a-12z8 + a-12z10 - 3a-11z + 8a-11z3 + 8a-11z5 - 14a-11z7 + 4a-11z9 + 2a-10 - 6a-10z2 + 8a-10z4 - a-10z6 - 3a-10z8 + a-10z10 - 4a-9z + 6a-9z3 + 2a-9z5 - 4a-9z7 + a-9z9 + 4a-8 - 16a-8z2 + 17a-8z4 - 7a-8z6 + a-8z8

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

{11, 35}

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=8 is the signature of 11338. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.)

trqj r = 0 r = 1 r = 2 r = 3 r = 4 r = 5 r = 6 r = 7 r = 8 r = 9 r = 10 r = 11 j = 31                       1 j = 29                     2   j = 27                   4 1   j = 25                 4 2     j = 23               6 4       j = 21             5 4         j = 19           5 6           j = 17         3 5             j = 15       3 5               j = 13     1 3                 j = 11     3                   j = 9 1 1                     j = 7 1

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]:=	Show[DrawMorseLink[Knot[11, Alternating, 338]]]
Out[2]=	-Graphics-
In[3]:=	PD[Knot[11, Alternating, 338]]
Out[3]=	PD[X[6, 2, 7, 1], X[14, 4, 15, 3], X[16, 6, 17, 5], X[20, 8, 21, 7], > X[22, 10, 1, 9], X[18, 12, 19, 11], X[2, 14, 3, 13], X[4, 16, 5, 15], > X[10, 18, 11, 17], X[12, 20, 13, 19], X[8, 22, 9, 21]]
In[4]:=	GaussCode[Knot[11, Alternating, 338]]
Out[4]=	GaussCode[1, -7, 2, -8, 3, -1, 4, -11, 5, -9, 6, -10, 7, -2, 8, -3, 9, -6, 10, > -4, 11, -5]
In[5]:=	DTCode[Knot[11, Alternating, 338]]
Out[5]=	DTCode[6, 14, 16, 20, 22, 18, 2, 4, 10, 12, 8]
In[6]:=	alex = Alexander[Knot[11, Alternating, 338]][t]
Out[6]=	2 5 9 12 2 3 4 13 + -- - -- + -- - -- - 12 t + 9 t - 5 t + 2 t 4 3 2 t t t t
In[7]:=	Conway[Knot[11, Alternating, 338]][z]
Out[7]=	2 4 6 8 1 + 11 z + 19 z + 11 z + 2 z
In[8]:=	Select[AllKnots[], (alex === Alexander[#][t])&]
Out[8]=	{Knot[11, Alternating, 338]}
In[9]:=	{KnotDet[Knot[11, Alternating, 338]], KnotSignature[Knot[11, Alternating, 338]]}
Out[9]=	{69, 8}
In[10]:=	J=Jones[Knot[11, Alternating, 338]][q]
Out[10]=	4 5 6 7 8 9 10 11 12 13 q - q + 4 q - 6 q + 8 q - 10 q + 11 q - 10 q + 8 q - 6 q + 14 15 > 3 q - q
In[11]:=	Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&]
Out[11]=	{Knot[11, Alternating, 338]}
In[12]:=	A2Invariant[Knot[11, Alternating, 338]][q]
Out[12]=	14 18 22 26 28 30 32 34 36 40 42 q + 3 q + 2 q - q + 2 q - 2 q + 2 q - 2 q - q - q + q - 44 > q
In[13]:=	HOMFLYPT[Knot[11, Alternating, 338]][a, z]
Out[13]=	2 2 2 4 4 4 6 6 -12 2 4 4 z z 16 z 4 z 6 z 17 z z 5 z -a - --- + -- - ---- - --- + ----- - ---- + ---- + ----- - --- + ---- + 10 8 12 10 8 12 10 8 12 10 a a a a a a a a a a 6 8 8 7 z z z > ---- + --- + -- 8 10 8 a a a
In[14]:=	Kauffman[Knot[11, Alternating, 338]][a, z]
Out[14]=	2 2 2 2 -12 2 4 2 z 2 z 3 z 3 z 4 z 4 z z 5 z 6 z -a + --- + -- + --- - --- - --- - --- - --- + ---- - --- + ---- - ---- - 10 8 17 15 13 11 9 16 14 12 10 a a a a a a a a a a a 2 3 3 3 3 3 3 4 4 4 16 z z 5 z 5 z 13 z 8 z 6 z 3 z 11 z z > ----- + --- - ---- + ---- + ----- + ---- + ---- + ---- - ----- + --- + 8 19 17 15 13 11 9 18 16 14 a a a a a a a a a a 4 4 4 5 5 5 5 5 6 6 6 z 8 z 17 z 6 z 14 z 14 z 8 z 2 z 8 z 11 z > ---- + ---- + ----- + ---- - ----- - ----- + ---- + ---- + ---- - ----- - 12 10 8 17 15 13 11 9 16 14 a a a a a a a a a a 6 6 6 7 7 7 7 8 8 8 8 13 z z 7 z 8 z 2 z 14 z 4 z 6 z 2 z 3 z z > ----- - --- - ---- + ---- - ---- - ----- - ---- + ---- + ---- - ---- + -- + 12 10 8 15 13 11 9 14 12 10 8 a a a a a a a a a a a 9 9 9 10 10 3 z 4 z z z z > ---- + ---- + -- + --- + --- 13 11 9 12 10 a a a a a
In[15]:=	{Vassiliev[2][Knot[11, Alternating, 338]], Vassiliev[3][Knot[11, Alternating, 338]]}
Out[15]=	{11, 35}
In[16]:=	Kh[Knot[11, Alternating, 338]][q, t]
Out[16]=	7 9 9 11 2 13 2 13 3 15 3 15 4 q + q + q t + 3 q t + q t + 3 q t + 3 q t + 5 q t + 17 4 17 5 19 5 19 6 21 6 21 7 > 3 q t + 5 q t + 5 q t + 6 q t + 5 q t + 4 q t + 23 7 23 8 25 8 25 9 27 9 27 10 > 6 q t + 4 q t + 4 q t + 2 q t + 4 q t + q t + 29 10 31 11 > 2 q t + q t

Dror Bar-Natan: The Knot Atlas: 11 Crossing Knots: The Knot K11a338

K11a337 K11a339