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Knotscape

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DrawMorseLink

PD Presentation:

X6172 X16,7,17,8 X17,1,18,4 X5,12,6,13 X3849 X13,22,14,5 X21,14,22,15 X9,18,10,19 X11,20,12,21 X19,10,20,11 X2,16,3,15

Gauss Code:

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

Jones Polynomial:

q-21/2 - q-19/2 + 3q-17/2 - 5q-15/2 + 6q-13/2 - 7q-11/2 + 6q-9/2 - 6q-7/2 + 3q-5/2 - 2q-3/2

A2 (sl(3)) Invariant:

- q-32 - q-30 - 2q-28 - 3q-26 - q-22 + q-20 + 3q-18 + 2q-16 + 4q-14 + q-12 + 2q-10 + 2q-8 + 2q-4

HOMFLY-PT Polynomial:

- a3z-1 - 4a3z - 2a3z3 - a5z-1 + 2a5z3 + a5z5 + 4a7z-1 + 7a7z + 4a7z3 + a7z5 - 2a9z-1 - 3a9z - a9z3

Kauffman Polynomial:

- a3z-1 + 5a3z - 3a3z3 + a4 - a4z2 - a4z6 + a5z-1 - a5z - 5a5z3 + 4a5z5 - 2a5z7 - 5a6 + 15a6z2 - 17a6z4 + 7a6z6 - 2a6z8 + 4a7z-1 - 13a7z + 16a7z3 - 10a7z5 + 3a7z7 - a7z9 - 6a8 + 21a8z2 - 21a8z4 + 11a8z6 - 3a8z8 + 2a9z-1 - 8a9z + 17a9z3 - 11a9z5 + 4a9z7 - a9z9 + a10 - 2a10z2 + a10z4 + 2a10z6 - a10z8 - a11z - a11z3 + 3a11z5 - a11z7 + 2a12 - 7a12z2 + 5a12z4 - a12z6

Khovanov Homology:

trqj r = -9 r = -8 r = -7 r = -6 r = -5 r = -4 r = -3 r = -2 r = -1 r = 0 j = -2                   2 j = -4                 3 2 j = -6               3     j = -8             3 3     j = -10           4 3       j = -12         2 3         j = -14       3 4           j = -16       2             j = -18   1 3               j = -20                     j = -22 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]:=	Length[Skeleton[L]]
Out[2]=	2
In[3]:=	Show[DrawMorseLink[Link[11, NonAlternating, 20]]]
Out[3]=	-Graphics-
In[4]:=	PD[L = Link[11, NonAlternating, 20]]
Out[4]=	PD[X[6, 1, 7, 2], X[16, 7, 17, 8], X[17, 1, 18, 4], X[5, 12, 6, 13], > X[3, 8, 4, 9], X[13, 22, 14, 5], X[21, 14, 22, 15], X[9, 18, 10, 19], > X[11, 20, 12, 21], X[19, 10, 20, 11], X[2, 16, 3, 15]]
In[5]:=	GaussCode[L]
Out[5]=	GaussCode[{1, -11, -5, 3}, {-4, -1, 2, 5, -8, 10, -9, 4, -6, 7, 11, -2, -3, 8, > -10, 9, -7, 6}]
In[6]:=	Jones[L][q]
Out[6]=	-(21/2) -(19/2) 3 5 6 7 6 6 3 2 q - q + ----- - ----- + ----- - ----- + ---- - ---- + ---- - ---- 17/2 15/2 13/2 11/2 9/2 7/2 5/2 3/2 q q q q q q q q
In[7]:=	A2Invariant[L][q]
Out[7]=	-32 -30 2 3 -22 -20 3 2 4 -12 2 2 2 -q - q - --- - --- - q + q + --- + --- + --- + q + --- + -- + -- 28 26 18 16 14 10 8 4 q q q q q q q q
In[8]:=	HOMFLYPT[Link[11, NonAlternating, 20]][a, z]
Out[8]=	3 5 7 9 a a 4 a 2 a 3 7 9 3 3 5 3 -(--) - -- + ---- - ---- - 4 a z + 7 a z - 3 a z - 2 a z + 2 a z + z z z z 7 3 9 3 5 5 7 5 > 4 a z - a z + a z + a z
In[9]:=	Kauffman[Link[11, NonAlternating, 20]][a, z]
Out[9]=	3 5 7 9 4 6 8 10 12 a a 4 a 2 a 3 5 a - 5 a - 6 a + a + 2 a - -- + -- + ---- + ---- + 5 a z - a z - z z z z 7 9 11 4 2 6 2 8 2 10 2 > 13 a z - 8 a z - a z - a z + 15 a z + 21 a z - 2 a z - 12 2 3 3 5 3 7 3 9 3 11 3 6 4 > 7 a z - 3 a z - 5 a z + 16 a z + 17 a z - a z - 17 a z - 8 4 10 4 12 4 5 5 7 5 9 5 11 5 > 21 a z + a z + 5 a z + 4 a z - 10 a z - 11 a z + 3 a z - 4 6 6 6 8 6 10 6 12 6 5 7 7 7 > a z + 7 a z + 11 a z + 2 a z - a z - 2 a z + 3 a z + 9 7 11 7 6 8 8 8 10 8 7 9 9 9 > 4 a z - a z - 2 a z - 3 a z - a z - a z - a z
In[10]:=	Kh[L][q, t]
Out[10]=	2 2 1 1 3 2 3 4 2 -- + -- + ------ + ------ + ------ + ------ + ------ + ------ + ------ + 4 2 22 9 18 8 18 7 16 6 14 6 14 5 12 5 q q q t q t q t q t q t q t q t 3 4 3 3 3 3 3 > ------ + ------ + ------ + ----- + ----- + ----- + ---- 12 4 10 4 10 3 8 3 8 2 6 2 4 q t q t q t q t q t q t q t

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