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

K11a199 K11a201

Knotscape

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DrawMorseLink

PD Presentation:

X4251 X12,4,13,3 X16,6,17,5 X14,8,15,7 X20,10,21,9 X2,12,3,11 X10,14,11,13 X6,16,7,15 X22,18,1,17 X8,20,9,19 X18,22,19,21

Gauss Code:

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

DT (Dowker-Thistlethwaite) Code:

4 12 16 14 20 2 10 6 22 8 18

Alexander Polynomial:

7t-2 - 21t-1 + 29 - 21t + 7t2

Conway Polynomial:

1 + 7z2 + 7z4

Other knots with the same Alexander/Conway Polynomial:

{10101, ...}

Determinant and Signature:

{85, 4}

Jones Polynomial:

q2 - 2q3 + 5q4 - 8q5 + 12q6 - 13q7 + 13q8 - 12q9 + 9q10 - 6q11 + 3q12 - q13

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

{...}

A2 (sl(3)) Invariant:

q6 - q8 + 2q10 + q12 - 2q14 + 3q16 + 2q22 - q24 + 2q26 - 2q28 - q30 + q32 - 3q34 + q36 + q38 - q40

HOMFLY-PT Polynomial:

- a-12z2 - 2a-10 - a-10z2 + a-10z4 + 2a-8 + 5a-8z2 + 3a-8z4 + 2a-6z2 + 2a-6z4 + a-4 + 2a-4z2 + a-4z4

Kauffman Polynomial:

- 2a-15z + 5a-15z3 - 4a-15z5 + a-15z7 - 5a-14z2 + 14a-14z4 - 12a-14z6 + 3a-14z8 - 3a-13z + 7a-13z3 - 8a-13z7 + 3a-13z9 - 6a-12z2 + 25a-12z4 - 26a-12z6 + 5a-12z8 + a-12z10 - 7a-11z + 17a-11z3 - 5a-11z5 - 13a-11z7 + 6a-11z9 + 2a-10 - 12a-10z2 + 29a-10z4 - 28a-10z6 + 7a-10z8 + a-10z10 - 6a-9z + 19a-9z3 - 15a-9z5 + 3a-9z9 + 2a-8 - 9a-8z2 + 15a-8z4 - 11a-8z6 + 5a-8z8 + 2a-7z3 - 4a-7z5 + 4a-7z7 - 2a-6z4 + 3a-6z6 - 2a-5z3 + 2a-5z5 + a-4 - 2a-4z2 + a-4z4

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

{7, 19}

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=4 is the signature of 11200. 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 = 27                       1 j = 25                     2   j = 23                   4 1   j = 21                 5 2     j = 19               7 4       j = 17             6 5         j = 15           7 7           j = 13         5 6             j = 11       3 7               j = 9     2 5                 j = 7     3                   j = 5 1 2                     j = 3 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, 200]]]
Out[2]=	-Graphics-
In[3]:=	PD[Knot[11, Alternating, 200]]
Out[3]=	PD[X[4, 2, 5, 1], X[12, 4, 13, 3], X[16, 6, 17, 5], X[14, 8, 15, 7], > X[20, 10, 21, 9], X[2, 12, 3, 11], X[10, 14, 11, 13], X[6, 16, 7, 15], > X[22, 18, 1, 17], X[8, 20, 9, 19], X[18, 22, 19, 21]]
In[4]:=	GaussCode[Knot[11, Alternating, 200]]
Out[4]=	GaussCode[1, -6, 2, -1, 3, -8, 4, -10, 5, -7, 6, -2, 7, -4, 8, -3, 9, -11, 10, > -5, 11, -9]
In[5]:=	DTCode[Knot[11, Alternating, 200]]
Out[5]=	DTCode[4, 12, 16, 14, 20, 2, 10, 6, 22, 8, 18]
In[6]:=	alex = Alexander[Knot[11, Alternating, 200]][t]
Out[6]=	7 21 2 29 + -- - -- - 21 t + 7 t 2 t t
In[7]:=	Conway[Knot[11, Alternating, 200]][z]
Out[7]=	2 4 1 + 7 z + 7 z
In[8]:=	Select[AllKnots[], (alex === Alexander[#][t])&]
Out[8]=	{Knot[10, 101], Knot[11, Alternating, 200]}
In[9]:=	{KnotDet[Knot[11, Alternating, 200]], KnotSignature[Knot[11, Alternating, 200]]}
Out[9]=	{85, 4}
In[10]:=	J=Jones[Knot[11, Alternating, 200]][q]
Out[10]=	2 3 4 5 6 7 8 9 10 11 q - 2 q + 5 q - 8 q + 12 q - 13 q + 13 q - 12 q + 9 q - 6 q + 12 13 > 3 q - q
In[11]:=	Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&]
Out[11]=	{Knot[11, Alternating, 200]}
In[12]:=	A2Invariant[Knot[11, Alternating, 200]][q]
Out[12]=	6 8 10 12 14 16 22 24 26 28 30 q - q + 2 q + q - 2 q + 3 q + 2 q - q + 2 q - 2 q - q + 32 34 36 38 40 > q - 3 q + q + q - q
In[13]:=	HOMFLYPT[Knot[11, Alternating, 200]][a, z]
Out[13]=	2 2 2 2 2 4 4 4 4 -2 2 -4 z z 5 z 2 z 2 z z 3 z 2 z z --- + -- + a - --- - --- + ---- + ---- + ---- + --- + ---- + ---- + -- 10 8 12 10 8 6 4 10 8 6 4 a a a a a a a a a a a
In[14]:=	Kauffman[Knot[11, Alternating, 200]][a, z]
Out[14]=	2 2 2 2 2 2 2 -4 2 z 3 z 7 z 6 z 5 z 6 z 12 z 9 z 2 z --- + -- + a - --- - --- - --- - --- - ---- - ---- - ----- - ---- - ---- + 10 8 15 13 11 9 14 12 10 8 4 a a a a a a a a a a a 3 3 3 3 3 3 4 4 4 4 5 z 7 z 17 z 19 z 2 z 2 z 14 z 25 z 29 z 15 z > ---- + ---- + ----- + ----- + ---- - ---- + ----- + ----- + ----- + ----- - 15 13 11 9 7 5 14 12 10 8 a a a a a a a a a a 4 4 5 5 5 5 5 6 6 6 2 z z 4 z 5 z 15 z 4 z 2 z 12 z 26 z 28 z > ---- + -- - ---- - ---- - ----- - ---- + ---- - ----- - ----- - ----- - 6 4 15 11 9 7 5 14 12 10 a a a a a a a a a a 6 6 7 7 7 7 8 8 8 8 11 z 3 z z 8 z 13 z 4 z 3 z 5 z 7 z 5 z > ----- + ---- + --- - ---- - ----- + ---- + ---- + ---- + ---- + ---- + 8 6 15 13 11 7 14 12 10 8 a a a a a a a a a a 9 9 9 10 10 3 z 6 z 3 z z z > ---- + ---- + ---- + --- + --- 13 11 9 12 10 a a a a a
In[15]:=	{Vassiliev[2][Knot[11, Alternating, 200]], Vassiliev[3][Knot[11, Alternating, 200]]}
Out[15]=	{7, 19}
In[16]:=	Kh[Knot[11, Alternating, 200]][q, t]
Out[16]=	3 5 5 7 2 9 2 9 3 11 3 11 4 q + q + 2 q t + 3 q t + 2 q t + 5 q t + 3 q t + 7 q t + 13 4 13 5 15 5 15 6 17 6 17 7 > 5 q t + 6 q t + 7 q t + 7 q t + 6 q t + 5 q t + 19 7 19 8 21 8 21 9 23 9 23 10 > 7 q t + 4 q t + 5 q t + 2 q t + 4 q t + q t + 25 10 27 11 > 2 q t + q t

Dror Bar-Natan: The Knot Atlas: 11 Crossing Knots: The Knot K11a200

K11a199 K11a201