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L11a42

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Acknowledgement

L11a42 as Morse Link
DrawMorseLink

PD Presentation: X6172 X10,4,11,3 X18,8,19,7 X20,13,21,14 X22,15,5,16 X14,21,15,22 X16,19,17,20 X12,10,13,9 X8,18,9,17 X2536 X4,12,1,11

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

Jones Polynomial: - q-13/2 + 3q-11/2 - 7q-9/2 + 12q-7/2 - 16q-5/2 + 18q-3/2 - 18q-1/2 + 15q1/2 - 12q3/2 + 6q5/2 - 3q7/2 + q9/2

A2 (sl(3)) Invariant: q-20 + 3q-14 - 3q-12 + q-10 - 3q-6 + 3q-4 - 3q-2 + 4 + q2 + q4 + 5q6 - q8 + q10 - q14

HOMFLY-PT Polynomial: 2a-3z + a-3z3 - 2a-1z-1 - 6a-1z - 6a-1z3 - 2a-1z5 + 4az-1 + 9az + 8az3 + 4az5 + az7 - 3a3z-1 - 7a3z - 6a3z3 - 2a3z5 + a5z-1 + 2a5z + a5z3

Kauffman Polynomial: - 2a-4z2 + 3a-4z4 - a-4z6 + 4a-3z - 9a-3z3 + 9a-3z5 - 3a-3z7 - 2a-2z2 - 2a-2z4 + 8a-2z6 - 4a-2z8 - 2a-1z-1 + 13a-1z - 24a-1z3 + 18a-1z5 - a-1z7 - 3a-1z9 + 2 - 3z2 - 7z4 + 18z6 - 8z8 - z10 - 4az-1 + 19az - 33az3 + 24az5 - 6az9 + 3a2 - 8a2z2 + 14a2z6 - 9a2z8 - a2z10 - 3a3z-1 + 13a3z - 24a3z3 + 23a3z5 - 7a3z7 - 3a3z9 + 3a4 - 8a4z2 + 7a4z4 + 2a4z6 - 5a4z8 - a5z-1 + 2a5z - 4a5z3 + 7a5z5 - 5a5z7 + a6 - 3a6z2 + 5a6z4 - 3a6z6 - a7z + 2a7z3 - a7z5

Khovanov Homology:
trqj r = -6r = -5r = -4r = -3r = -2r = -1r = 0r = 1r = 2r = 3r = 4r = 5
j = 10           1
j = 8          2 
j = 6         41 
j = 4        82  
j = 2       74   
j = 0      118    
j = -2     99     
j = -4    79      
j = -6   59       
j = -8  27        
j = -10 15         
j = -12 2          
j = -141           


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, Alternating, 42]]]
Out[3]=   
 -Graphics- 
In[4]:=
PD[L = Link[11, Alternating, 42]]
Out[4]=   
PD[X[6, 1, 7, 2], X[10, 4, 11, 3], X[18, 8, 19, 7], X[20, 13, 21, 14], 
 
>   X[22, 15, 5, 16], X[14, 21, 15, 22], X[16, 19, 17, 20], X[12, 10, 13, 9], 
 
>   X[8, 18, 9, 17], X[2, 5, 3, 6], X[4, 12, 1, 11]]
In[5]:=
GaussCode[L]
Out[5]=   
GaussCode[{1, -10, 2, -11}, {10, -1, 3, -9, 8, -2, 11, -8, 4, -6, 5, -7, 9, -3, 
 
>    7, -4, 6, -5}]
In[6]:=
Jones[L][q]
Out[6]=   
  -(13/2)     3      7      12     16     18      18
-q        + ----- - ---- + ---- - ---- + ---- - ------- + 15 Sqrt[q] - 
             11/2    9/2    7/2    5/2    3/2   Sqrt[q]
            q       q      q      q      q
 
        3/2      5/2      7/2    9/2
>   12 q    + 6 q    - 3 q    + q
In[7]:=
A2Invariant[L][q]
Out[7]=   
     -20    3     3     -10   3    3    3     2    4      6    8    10    14
4 + q    + --- - --- + q    - -- + -- - -- + q  + q  + 5 q  - q  + q   - q
            14    12           6    4    2
           q     q            q    q    q
In[8]:=
HOMFLYPT[Link[11, Alternating, 42]][a, z]
Out[8]=   
               3    5                                          3      3
-2    4 a   3 a    a    2 z   6 z              3        5     z    6 z
--- + --- - ---- + -- + --- - --- + 9 a z - 7 a  z + 2 a  z + -- - ---- + 
a z    z     z     z     3     a                               3    a
                        a                                     a
 
                                  5
         3      3  3    5  3   2 z         5      3  5      7
>   8 a z  - 6 a  z  + a  z  - ---- + 4 a z  - 2 a  z  + a z
                                a
In[9]:=
Kauffman[Link[11, Alternating, 42]][a, z]
Out[9]=   
                                      3    5
       2      4    6    2    4 a   3 a    a    4 z   13 z                3
2 + 3 a  + 3 a  + a  - --- - --- - ---- - -- + --- + ---- + 19 a z + 13 a  z + 
                       a z    z     z     z     3     a
                                               a
 
                              2      2                                    3
       5      7        2   2 z    2 z       2  2      4  2      6  2   9 z
>   2 a  z - a  z - 3 z  - ---- - ---- - 8 a  z  - 8 a  z  - 3 a  z  - ---- - 
                             4      2                                    3
                            a      a                                    a
 
        3                                                      4      4
    24 z          3       3  3      5  3      7  3      4   3 z    2 z
>   ----- - 33 a z  - 24 a  z  - 4 a  z  + 2 a  z  - 7 z  + ---- - ---- + 
      a                                                       4      2
                                                             a      a
 
                           5       5
       4  4      6  4   9 z    18 z          5       3  5      5  5    7  5
>   7 a  z  + 5 a  z  + ---- + ----- + 24 a z  + 23 a  z  + 7 a  z  - a  z  + 
                          3      a
                         a
 
             6      6                                     7    7
        6   z    8 z        2  6      4  6      6  6   3 z    z       3  7
>   18 z  - -- + ---- + 14 a  z  + 2 a  z  - 3 a  z  - ---- - -- - 7 a  z  - 
             4     2                                     3    a
            a     a                                     a
 
                        8                          9
       5  7      8   4 z       2  8      4  8   3 z         9      3  9    10
>   5 a  z  - 8 z  - ---- - 9 a  z  - 5 a  z  - ---- - 6 a z  - 3 a  z  - z   - 
                       2                         a
                      a
 
     2  10
>   a  z
In[10]:=
Kh[L][q, t]
Out[10]=   
     9      1        2        1        5        2       7       5       9
11 + -- + ------ + ------ + ------ + ------ + ----- + ----- + ----- + ----- + 
      2    14  6    12  5    10  5    10  4    8  4    8  3    6  3    6  2
     q    q   t    q   t    q   t    q   t    q  t    q  t    q  t    q  t
 
      7      9      9              2        2  2      4  2      4  3
>   ----- + ---- + ---- + 8 t + 7 q  t + 4 q  t  + 8 q  t  + 2 q  t  + 
     4  2    4      2
    q  t    q  t   q  t
 
       6  3    6  4      8  4    10  5
>   4 q  t  + q  t  + 2 q  t  + q   t


Dror Bar-Natan: The Knot Atlas: The Thistlethwaite Link Table: The Link L11a42
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