10 123

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10 122.gif

10_122

10 124.gif

10_124

10 123.gif Visit 10 123's page at the Knot Server (KnotPlot driven, includes 3D interactive images!)

Visit 10 123's page at Knotilus!

Visit 10 123's page at the original Knot Atlas!

10_123 can be depicted with five-fold rotational symmetry (like 5 1).




Quasi-floral decorative knot.
Decorative pentagonal representation.
Symmetrical "flower".
Cylindrical depiction

Knot presentations

Planar diagram presentation X8291 X10,3,11,4 X12,6,13,5 X4,18,5,17 X18,11,19,12 X2,15,3,16 X16,10,17,9 X20,14,1,13 X14,7,15,8 X6,19,7,20
Gauss code 1, -6, 2, -4, 3, -10, 9, -1, 7, -2, 5, -3, 8, -9, 6, -7, 4, -5, 10, -8
Dowker-Thistlethwaite code 8 10 12 14 16 18 20 2 4 6
Conway Notation [10*]

Three dimensional invariants

Symmetry type Fully amphicheiral
Unknotting number 2
3-genus 4
Bridge index 3
Super bridge index Missing
Nakanishi index 2
Maximal Thurston-Bennequin number [-6][-6]
Hyperbolic Volume 17.0857
A-Polynomial See Data:10 123/A-polynomial

[edit Notes for 10 123's three dimensional invariants]

Four dimensional invariants

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

[edit Notes for 10 123's four dimensional invariants]

Polynomial invariants

Alexander polynomial
Conway polynomial
2nd Alexander ideal (db, data sources)
Determinant and Signature { 121, 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: (-2, 0)
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 10 123. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
-5-4-3-2-1012345χ
11          1-1
9         4 4
7        61 -5
5       94  5
3      106   -4
1     119    2
-1    911     2
-3   610      -4
-5  49       5
-7 16        -5
-9 4         4
-111          -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, 123]]
Out[2]=  
10
In[3]:=
PD[Knot[10, 123]]
Out[3]=  
PD[X[8, 2, 9, 1], X[10, 3, 11, 4], X[12, 6, 13, 5], X[4, 18, 5, 17], 
 X[18, 11, 19, 12], X[2, 15, 3, 16], X[16, 10, 17, 9], 

X[20, 14, 1, 13], X[14, 7, 15, 8], X[6, 19, 7, 20]]
In[4]:=
GaussCode[Knot[10, 123]]
Out[4]=  
GaussCode[1, -6, 2, -4, 3, -10, 9, -1, 7, -2, 5, -3, 8, -9, 6, -7, 4, 
  -5, 10, -8]
In[5]:=
BR[Knot[10, 123]]
Out[5]=  
BR[3, {-1, 2, -1, 2, -1, 2, -1, 2, -1, 2}]
In[6]:=
alex = Alexander[Knot[10, 123]][t]
Out[6]=  
      -4   6    15   24              2      3    4

29 + t - -- + -- - -- - 24 t + 15 t - 6 t + t

           3    2   t
t t
In[7]:=
Conway[Knot[10, 123]][z]
Out[7]=  
       2    4      6    8
1 - 2 z  - z  + 2 z  + z
In[8]:=
Select[AllKnots[], (alex === Alexander[#][t])&]
Out[8]=  
{Knot[10, 123], Knot[11, Alternating, 28]}
In[9]:=
{KnotDet[Knot[10, 123]], KnotSignature[Knot[10, 123]]}
Out[9]=  
{121, 0}
In[10]:=
J=Jones[Knot[10, 123]][q]
Out[10]=  
      -5   5    10   15   19              2       3      4    5

21 - q + -- - -- + -- - -- - 19 q + 15 q - 10 q + 5 q - q

           4    3    2   q
q q q
In[11]:=
Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&]
Out[11]=  
{Knot[10, 123]}
In[12]:=
A2Invariant[Knot[10, 123]][q]
Out[12]=  
      -14    3     2    3    3    4       2      4      8      10

-5 - q + --- - --- + -- - -- + -- + 4 q - 3 q + 3 q - 2 q +

            12    10    8    4    2
           q     q     q    q    q

    12    14
3 q - q
In[13]:=
Kauffman[Knot[10, 123]][a, z]
Out[13]=  
                                          2                3       3
    2       2   2 z               2   6 z       2  2   5 z    21 z

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

     2           a                      2                3      a
    a                                  a                a

                               4      4                        5
       3      3  3      4   5 z    3 z       2  4      4  4   z
 21 a z  + 5 a  z  + 4 z  - ---- - ---- - 3 a  z  - 5 a  z  + -- - 
                              4      2                         5
                             a      a                         a

     5       5                                           6       6
 15 z    38 z          5       3  5    5  5       6   5 z    11 z
 ----- - ----- - 38 a z  - 15 a  z  + a  z  - 32 z  + ---- - ----- - 
   3       a                                            4      2
  a                                                    a      a

                          7       7
     2  6      4  6   10 z    14 z          7       3  7       8
 11 a  z  + 5 a  z  + ----- + ----- + 14 a z  + 10 a  z  + 20 z  + 
                        3       a
                       a

     8                 9
 10 z        2  8   4 z         9
 ----- + 10 a  z  + ---- + 4 a z
   2                 a
a
In[14]:=
{Vassiliev[2][Knot[10, 123]], Vassiliev[3][Knot[10, 123]]}
Out[14]=  
{0, 0}
In[15]:=
Kh[Knot[10, 123]][q, t]
Out[15]=  
11            1        4       1       6       4       9       6

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

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

  10     9                3        3  2      5  2      5  3
 ---- + --- + 9 q t + 10 q  t + 6 q  t  + 9 q  t  + 4 q  t  + 
  3     q t
 q  t

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