10 10

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10 9.gif

10_9

10 11.gif

10_11

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10 10 Quick Notes


10 10 Further Notes and Views

Knot presentations

Planar diagram presentation X1425 X3,12,4,13 X13,1,14,20 X5,15,6,14 X19,7,20,6 X7,19,8,18 X9,17,10,16 X15,11,16,10 X17,9,18,8 X11,2,12,3
Gauss code -1, 10, -2, 1, -4, 5, -6, 9, -7, 8, -10, 2, -3, 4, -8, 7, -9, 6, -5, 3
Dowker-Thistlethwaite code 4 12 14 18 16 2 20 10 8 6
Conway Notation [51112]

Three dimensional invariants

Symmetry type Reversible
Unknotting number 1
3-genus 2
Bridge index 2
Super bridge index Missing
Nakanishi index 1
Maximal Thurston-Bennequin number [-4][-8]
Hyperbolic Volume 9.18057
A-Polynomial See Data:10 10/A-polynomial

[edit Notes for 10 10's three dimensional invariants]

Four dimensional invariants

Smooth 4 genus
Topological 4 genus
Concordance genus
Rasmussen s-Invariant 0

[edit Notes for 10 10's four dimensional invariants]

Polynomial invariants

Alexander polynomial
Conway polynomial
2nd Alexander ideal (db, data sources)
Determinant and Signature { 45, 0 }
Jones polynomial
HOMFLY-PT polynomial (db, data sources)
Kauffman polynomial (db, data sources)
The A2 invariant
The G2 invariant

Vassiliev invariants

V2 and V3: (1, 2)
V2,1 through V6,9:
V2,1 V3,1 V4,1 V4,2 V4,3 V5,1 V5,2 V5,3 V5,4 V6,1 V6,2 V6,3 V6,4 V6,5 V6,6 V6,7 V6,8 V6,9

V2,1 through V6,9 were provided by Petr Dunin-Barkowski <barkovs@itep.ru>, Andrey Smirnov <asmirnov@itep.ru>, and Alexei Sleptsov <sleptsov@itep.ru> and uploaded on October 2010 by User:Drorbn. Note that they are normalized differently than V2 and V3.

Khovanov Homology

The coefficients of the monomials are shown, along with their alternating sums (fixed , alternation over ). The squares with yellow highlighting are those on the "critical diagonals", where or , where 0 is the signature of 10 10. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
-3-2-101234567χ
15          1-1
13         1 1
11        21 -1
9       31  2
7      32   -1
5     43    1
3    33     0
1   34      -1
-1  24       2
-3 12        -1
-5 2         2
-71          -1
Integral Khovanov Homology

(db, data source)

  

Computer Talk

Much of the above data can be recomputed by Mathematica using the package KnotTheory`. See A Sample KnotTheory` Session.

In[1]:=    
<< KnotTheory`
Loading KnotTheory` (version of August 17, 2005, 14:44:34)...
In[2]:=
Crossings[Knot[10, 10]]
Out[2]=  
10
In[3]:=
PD[Knot[10, 10]]
Out[3]=  
PD[X[1, 4, 2, 5], X[3, 12, 4, 13], X[13, 1, 14, 20], X[5, 15, 6, 14], 
 X[19, 7, 20, 6], X[7, 19, 8, 18], X[9, 17, 10, 16], 

X[15, 11, 16, 10], X[17, 9, 18, 8], X[11, 2, 12, 3]]
In[4]:=
GaussCode[Knot[10, 10]]
Out[4]=  
GaussCode[-1, 10, -2, 1, -4, 5, -6, 9, -7, 8, -10, 2, -3, 4, -8, 7, -9, 
  6, -5, 3]
In[5]:=
BR[Knot[10, 10]]
Out[5]=  
BR[5, {-1, -1, 2, -1, 2, 2, 3, -2, 3, 4, -3, 4}]
In[6]:=
alex = Alexander[Knot[10, 10]][t]
Out[6]=  
     3    11             2

17 + -- - -- - 11 t + 3 t

     2   t
t
In[7]:=
Conway[Knot[10, 10]][z]
Out[7]=  
     2      4
1 + z  + 3 z
In[8]:=
Select[AllKnots[], (alex === Alexander[#][t])&]
Out[8]=  
{Knot[10, 10], Knot[10, 164]}
In[9]:=
{KnotDet[Knot[10, 10]], KnotSignature[Knot[10, 10]]}
Out[9]=  
{45, 0}
In[10]:=
J=Jones[Knot[10, 10]][q]
Out[10]=  
     -3   3    4            2      3      4      5      6    7

6 - q + -- - - - 7 q + 7 q - 6 q + 5 q - 3 q + 2 q - q

          2   q
q
In[11]:=
Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&]
Out[11]=  
{Knot[10, 10]}
In[12]:=
A2Invariant[Knot[10, 10]][q]
Out[12]=  
  -10    -8    -6    -4   2     6    8    12      14    16    22

-q + q + q - q + -- - q + q + q + 2 q - q - q

                          2
q
In[13]:=
Kauffman[Knot[10, 10]][a, z]
Out[13]=  
                                                     2       2      2
    -6   2     -2   3 z   6 z   4 z   z      2   8 z    12 z    4 z

1 + a + -- + a - --- - --- - --- - - - 2 z - ---- - ----- - ---- -

          4          7     5     3    a            6      4       2
         a          a     a     a                 a      a       a

              3       3       3      3
    2  2   7 z    17 z    17 z    3 z         3    3  3      4
 2 a  z  + ---- + ----- + ----- + ---- - 3 a z  + a  z  - 3 z  + 
             7      5       3      a
            a      a       a

     4       4      4                5       5       5      5
 15 z    26 z    5 z       2  4   5 z    10 z    16 z    7 z
 ----- + ----- + ---- + 3 a  z  - ---- - ----- - ----- - ---- + 
   6       4       2                7      5       3      a
  a       a       a                a      a       a

                     6       6      6    7    7      7      7      8
      5      6   10 z    21 z    7 z    z    z    2 z    4 z    2 z
 4 a z  + 4 z  - ----- - ----- - ---- + -- - -- + ---- + ---- + ---- + 
                   6       4       2     7    5     3     a       6
                  a       a       a     a    a     a             a

    8      8    9    9
 5 z    3 z    z    z
 ---- + ---- + -- + --
   4      2     5    3
a a a a
In[14]:=
{Vassiliev[2][Knot[10, 10]], Vassiliev[3][Knot[10, 10]]}
Out[14]=  
{0, 2}
In[15]:=
Kh[Knot[10, 10]][q, t]
Out[15]=  
4           1       2       1      2      2               3

- + 3 q + ----- + ----- + ----- + ---- + --- + 4 q t + 3 q t + q 7 3 5 2 3 2 3 q t

         q  t    q  t    q  t    q  t

    3  2      5  2      5  3      7  3      7  4      9  4    9  5
 3 q  t  + 4 q  t  + 3 q  t  + 3 q  t  + 2 q  t  + 3 q  t  + q  t  + 

    11  5    11  6    13  6    15  7
2 q t + q t + q t + q t