10 24

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10_23

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10_25

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10 24 Quick Notes


10 24 Further Notes and Views

Knot presentations

Planar diagram presentation X1425 X11,14,12,15 X3,13,4,12 X13,3,14,2 X5,16,6,17 X9,20,10,1 X19,6,20,7 X7,18,8,19 X17,8,18,9 X15,10,16,11
Gauss code -1, 4, -3, 1, -5, 7, -8, 9, -6, 10, -2, 3, -4, 2, -10, 5, -9, 8, -7, 6
Dowker-Thistlethwaite code 4 12 16 18 20 14 2 10 8 6
Conway Notation [3232]

Three dimensional invariants

Symmetry type Reversible
Unknotting number 2
3-genus 2
Bridge index 2
Super bridge index Missing
Nakanishi index 1
Maximal Thurston-Bennequin number [-11][-1]
Hyperbolic Volume 10.9775
A-Polynomial See Data:10 24/A-polynomial

[edit Notes for 10 24's three dimensional invariants]

Four dimensional invariants

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

[edit Notes for 10 24's four dimensional invariants]

Polynomial invariants

Alexander polynomial
Conway polynomial
2nd Alexander ideal (db, data sources)
Determinant and Signature { 55, -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: (-2, 5)
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 24. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
-8-7-6-5-4-3-2-1012χ
3          11
1         1 -1
-1        41 3
-3       42  -2
-5      53   2
-7     44    0
-9    45     -1
-11   34      1
-13  14       -3
-15 13        2
-17 1         -1
-191          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, 24]]
Out[2]=  
10
In[3]:=
PD[Knot[10, 24]]
Out[3]=  
PD[X[1, 4, 2, 5], X[11, 14, 12, 15], X[3, 13, 4, 12], X[13, 3, 14, 2], 
 X[5, 16, 6, 17], X[9, 20, 10, 1], X[19, 6, 20, 7], X[7, 18, 8, 19], 

X[17, 8, 18, 9], X[15, 10, 16, 11]]
In[4]:=
GaussCode[Knot[10, 24]]
Out[4]=  
GaussCode[-1, 4, -3, 1, -5, 7, -8, 9, -6, 10, -2, 3, -4, 2, -10, 5, -9, 
  8, -7, 6]
In[5]:=
BR[Knot[10, 24]]
Out[5]=  
BR[5, {-1, -1, -2, 1, -2, -2, -2, -3, 2, 4, -3, 4}]
In[6]:=
alex = Alexander[Knot[10, 24]][t]
Out[6]=  
      4    14             2

-19 - -- + -- + 14 t - 4 t

      2   t
t
In[7]:=
Conway[Knot[10, 24]][z]
Out[7]=  
       2      4
1 - 2 z  - 4 z
In[8]:=
Select[AllKnots[], (alex === Alexander[#][t])&]
Out[8]=  
{Knot[10, 18], Knot[10, 24]}
In[9]:=
{KnotDet[Knot[10, 24]], KnotSignature[Knot[10, 24]]}
Out[9]=  
{55, -2}
In[10]:=
J=Jones[Knot[10, 24]][q]
Out[10]=  
      -9   2    4    7    8    9    9    7    5

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

           8    7    6    5    4    3    2   q
q q q q q q q
In[11]:=
Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&]
Out[11]=  
{Knot[10, 24]}
In[12]:=
A2Invariant[Knot[10, 24]][q]
Out[12]=  
 -28    2     2     -18    2     -12    -10    -8    -6    -4   3     4

q + --- - --- - q - --- + q - q + q + q - q + -- + q

       22    20           14                                    2
q q q q
In[13]:=
Kauffman[Knot[10, 24]][a, z]
Out[13]=  
     2    4    6    8      3        5        9        2      2  2

1 - a - a + a + a + 2 a z + 4 a z - 2 a z - 2 z + 2 a z +

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

    9  3    4      2  4      4  4      6  4      8  4      10  4
 7 a  z  + z  - 3 a  z  - 5 a  z  + 6 a  z  + 3 a  z  - 4 a   z  + 

      5      3  5    5  5      7  5      9  5      2  6    4  6
 2 a z  - 2 a  z  + a  z  - 2 a  z  - 7 a  z  + 3 a  z  + a  z  - 

    6  6      8  6    10  6      3  7    5  7      9  7      4  8
 8 a  z  - 5 a  z  + a   z  + 3 a  z  + a  z  + 2 a  z  + 2 a  z  + 

    6  8      8  8    5  9    7  9
4 a z + 2 a z + a z + a z
In[14]:=
{Vassiliev[2][Knot[10, 24]], Vassiliev[3][Knot[10, 24]]}
Out[14]=  
{0, 5}
In[15]:=
Kh[Knot[10, 24]][q, t]
Out[15]=  
2    4     1        1        1        3        1        4        3

-- + - + ------ + ------ + ------ + ------ + ------ + ------ + ------ +

3   q    19  8    17  7    15  7    15  6    13  6    13  5    11  5

q q t q t q t q t q t q t q t

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

        3  2
q t + q t