10 65

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10 64.gif

10_64

10 66.gif

10_66

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10 65 Quick Notes


10 65 Further Notes and Views

Knot presentations

Planar diagram presentation X1425 X3,10,4,11 X11,19,12,18 X5,15,6,14 X17,7,18,6 X7,17,8,16 X15,9,16,8 X13,1,14,20 X19,13,20,12 X9,2,10,3
Gauss code -1, 10, -2, 1, -4, 5, -6, 7, -10, 2, -3, 9, -8, 4, -7, 6, -5, 3, -9, 8
Dowker-Thistlethwaite code 4 10 14 16 2 18 20 8 6 12
Conway Notation [31,3,21]

Three dimensional invariants

Symmetry type Reversible
Unknotting number 2
3-genus 3
Bridge index 3
Super bridge index Missing
Nakanishi index 1
Maximal Thurston-Bennequin number [-2][-10]
Hyperbolic Volume 12.0765
A-Polynomial See Data:10 65/A-polynomial

[edit Notes for 10 65's three dimensional invariants]

Four dimensional invariants

Smooth 4 genus
Topological 4 genus
Concordance genus
Rasmussen s-Invariant 2

[edit Notes for 10 65's four dimensional invariants]

Polynomial invariants

Alexander polynomial
Conway polynomial
2nd Alexander ideal (db, data sources)
Determinant and Signature { 63, 2 }
Jones polynomial
HOMFLY-PT polynomial (db, data sources)
Kauffman polynomial (db, data sources)
The A2 invariant
The G2 invariant

Vassiliev invariants

V2 and V3: (4, 7)
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 2 is the signature of 10 65. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
-3-2-101234567χ
17          1-1
15         1 1
13        41 -3
11       41  3
9      54   -1
7     64    2
5    45     1
3   46      -2
1  25       3
-1 13        -2
-3 2         2
-51          -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, 65]]
Out[2]=  
10
In[3]:=
PD[Knot[10, 65]]
Out[3]=  
PD[X[1, 4, 2, 5], X[3, 10, 4, 11], X[11, 19, 12, 18], X[5, 15, 6, 14], 
 X[17, 7, 18, 6], X[7, 17, 8, 16], X[15, 9, 16, 8], X[13, 1, 14, 20], 

X[19, 13, 20, 12], X[9, 2, 10, 3]]
In[4]:=
GaussCode[Knot[10, 65]]
Out[4]=  
GaussCode[-1, 10, -2, 1, -4, 5, -6, 7, -10, 2, -3, 9, -8, 4, -7, 6, -5, 
  3, -9, 8]
In[5]:=
BR[Knot[10, 65]]
Out[5]=  
BR[4, {1, 1, 2, -1, 2, -3, 2, 2, 2, -3, -3}]
In[6]:=
alex = Alexander[Knot[10, 65]][t]
Out[6]=  
      2    7    14             2      3

-17 + -- - -- + -- + 14 t - 7 t + 2 t

      3    2   t
t t
In[7]:=
Conway[Knot[10, 65]][z]
Out[7]=  
       2      4      6
1 + 4 z  + 5 z  + 2 z
In[8]:=
Select[AllKnots[], (alex === Alexander[#][t])&]
Out[8]=  
{Knot[10, 65], Knot[10, 77], Knot[11, NonAlternating, 71], 
  Knot[11, NonAlternating, 75]}
In[9]:=
{KnotDet[Knot[10, 65]], KnotSignature[Knot[10, 65]]}
Out[9]=  
{63, 2}
In[10]:=
J=Jones[Knot[10, 65]][q]
Out[10]=  
      -2   3             2       3      4      5      6      7    8

-5 - q + - + 8 q - 10 q + 11 q - 9 q + 8 q - 5 q + 2 q - q

q
In[11]:=
Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&]
Out[11]=  
{Knot[10, 65]}
In[12]:=
A2Invariant[Knot[10, 65]][q]
Out[12]=  
  -6    -4      2      4    6      10      12      16      18      20

-q + q + 2 q - 3 q + q + 2 q + 4 q + 2 q - 2 q - 2 q -

  24
q
In[13]:=
Kauffman[Knot[10, 65]][a, z]
Out[13]=  
                                                      2       2

3 5 -2 2 z 2 z 8 z 6 z 2 z 2 z 12 z -- + -- + a + --- - --- - --- - --- - --- + 3 z + -- - ----- -

6    4          9     7     5     3     a            8     6

a a a a a a a a

     2    2      3      3       3       3      3
 17 z    z    3 z    4 z    19 z    20 z    6 z         3      4
 ----- - -- - ---- + ---- + ----- + ----- + ---- - 2 a z  - 7 z  - 
   4      2     9      7      5       3      a
  a      a     a      a      a       a

    4       4       4    4    5      5       5       5      5
 4 z    12 z    24 z    z    z    6 z    14 z    17 z    9 z       5
 ---- + ----- + ----- + -- + -- - ---- - ----- - ----- - ---- + a z  + 
   8      6       4      2    9     7      5       3      a
  a      a       a      a    a     a      a       a

           6      6       6      6      7      7      7      7
    6   2 z    7 z    16 z    4 z    3 z    4 z    5 z    4 z
 3 z  + ---- - ---- - ----- - ---- + ---- + ---- + ---- + ---- + 
          8      6      4       2      7      5      3     a
         a      a      a       a      a      a      a

    8      8      8    9    9
 3 z    6 z    3 z    z    z
 ---- + ---- + ---- + -- + --
   6      4      2     5    3
a a a a a
In[14]:=
{Vassiliev[2][Knot[10, 65]], Vassiliev[3][Knot[10, 65]]}
Out[14]=  
{0, 7}
In[15]:=
Kh[Knot[10, 65]][q, t]
Out[15]=  
         3     1       2      1      3    2 q      3        5

5 q + 4 q + ----- + ----- + ---- + --- + --- + 6 q t + 4 q t +

             5  3    3  2      2   q t    t
            q  t    q  t    q t

    5  2      7  2      7  3      9  3      9  4      11  4    11  5
 5 q  t  + 6 q  t  + 4 q  t  + 5 q  t  + 4 q  t  + 4 q   t  + q   t  + 

    13  5    13  6    15  6    17  7
4 q t + q t + q t + q t