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Acknowledgement

L7a3 as Morse Link
DrawMorseLink

PD Presentation: X6172 X10,4,11,3 X12,8,13,7 X14,10,5,9 X8,14,9,13 X2536 X4,12,1,11

Gauss Code: {{1, -6, 2, -7}, {6, -1, 3, -5, 4, -2, 7, -3, 5, -4}}

Jones Polynomial: - q-1/2 + q1/2 - 3q3/2 + 2q5/2 - 3q7/2 + 3q9/2 - 2q11/2 + q13/2

A2 (sl(3)) Invariant: q-2 + 1 + 2q2 + 3q4 + 2q6 + 3q8 - q14 - q16 - q20

HOMFLY-PT Polynomial: a-5z-1 + 2a-5z + a-5z3 - 3a-3z-1 - 5a-3z - 4a-3z3 - a-3z5 + 2a-1z-1 + 3a-1z + a-1z3

Kauffman Polynomial: - a-8z2 - 2a-7z3 - a-6 + 3a-6z2 - 3a-6z4 + a-5z-1 - 4a-5z + 6a-5z3 - 3a-5z5 - 3a-4 + 6a-4z2 - a-4z4 - a-4z6 + 3a-3z-1 - 9a-3z + 12a-3z3 - 4a-3z5 - 3a-2 + 2a-2z2 + 2a-2z4 - a-2z6 + 2a-1z-1 - 5a-1z + 4a-1z3 - a-1z5

Khovanov Homology:
trqj r = -2r = -1r = 0r = 1r = 2r = 3r = 4r = 5
j = 14       1
j = 12      1 
j = 10     21 
j = 8    11  
j = 6   12   
j = 4  21    
j = 2 13     
j = 0        
j = -21       


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[7, Alternating, 3]]]
Out[3]=   
 -Graphics- 
In[4]:=
PD[L = Link[7, Alternating, 3]]
Out[4]=   
PD[X[6, 1, 7, 2], X[10, 4, 11, 3], X[12, 8, 13, 7], X[14, 10, 5, 9], 
 
>   X[8, 14, 9, 13], X[2, 5, 3, 6], X[4, 12, 1, 11]]
In[5]:=
GaussCode[L]
Out[5]=   
GaussCode[{1, -6, 2, -7}, {6, -1, 3, -5, 4, -2, 7, -3, 5, -4}]
In[6]:=
Jones[L][q]
Out[6]=   
     1                    3/2      5/2      7/2      9/2      11/2    13/2
-(-------) + Sqrt[q] - 3 q    + 2 q    - 3 q    + 3 q    - 2 q     + q
  Sqrt[q]
In[7]:=
A2Invariant[L][q]
Out[7]=   
     -2      2      4      6      8    14    16    20
1 + q   + 2 q  + 3 q  + 2 q  + 3 q  - q   - q   - q
In[8]:=
HOMFLYPT[Link[7, Alternating, 3]][a, z]
Out[8]=   
                                       3      3    3    5
 1      3      2    2 z   5 z   3 z   z    4 z    z    z
---- - ---- + --- + --- - --- + --- + -- - ---- + -- - --
 5      3     a z    5     3     a     5     3    a     3
a  z   a  z         a     a           a     a          a
In[9]:=
Kauffman[Link[7, Alternating, 3]][a, z]
Out[9]=   
                                                        2      2      2
  -6   3    3     1      3      2    4 z   9 z   5 z   z    3 z    6 z
-a   - -- - -- + ---- + ---- + --- - --- - --- - --- - -- + ---- + ---- + 
        4    2    5      3     a z    5     3     a     8     6      4
       a    a    a  z   a  z         a     a           a     a      a
 
       2      3      3       3      3      4    4      4      5      5    5
    2 z    2 z    6 z    12 z    4 z    3 z    z    2 z    3 z    4 z    z
>   ---- - ---- + ---- + ----- + ---- - ---- - -- + ---- - ---- - ---- - -- - 
      2      7      5      3      a       6     4     2      5      3    a
     a      a      a      a              a     a     a      a      a
 
     6    6
    z    z
>   -- - --
     4    2
    a    a
In[10]:=
Kh[L][q, t]
Out[10]=   
                       2
   2      4     1     q     4      6        6  2    8  2    8  3      10  3
3 q  + 2 q  + ----- + -- + q  t + q  t + 2 q  t  + q  t  + q  t  + 2 q   t  + 
               2  2   t
              q  t
 
     10  4    12  4    14  5
>   q   t  + q   t  + q   t


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