In[1]:= |
<< KnotTheory` |
Loading KnotTheory` (version of August 29, 2005, 15:27:48)... |
In[2]:= | PD[Knot[9, 43]] |
Out[2]= | PD[X[4, 2, 5, 1], X[10, 6, 11, 5], X[8, 3, 9, 4], X[2, 9, 3, 10],
X[14, 8, 15, 7], X[15, 1, 16, 18], X[11, 17, 12, 16],
X[17, 13, 18, 12], X[6, 14, 7, 13]] |
In[3]:= | GaussCode[Knot[9, 43]] |
Out[3]= | GaussCode[1, -4, 3, -1, 2, -9, 5, -3, 4, -2, -7, 8, 9, -5, -6, 7, -8, 6] |
In[4]:= | DTCode[Knot[9, 43]] |
Out[4]= | DTCode[4, 8, 10, 14, 2, -16, 6, -18, -12] |
In[5]:= | br = BR[Knot[9, 43]] |
Out[5]= | BR[4, {1, 1, 1, 2, 1, 1, -3, 2, -3}] |
In[6]:= | {First[br], Crossings[br]} |
Out[6]= | {4, 9} |
In[7]:= | BraidIndex[Knot[9, 43]] |
Out[7]= | 4 |
In[8]:= | Show[DrawMorseLink[Knot[9, 43]]] |
| |
Out[8]= | -Graphics- |
In[9]:= | (#[Knot[9, 43]]&) /@ {SymmetryType, UnknottingNumber, ThreeGenus, BridgeIndex, SuperBridgeIndex, NakanishiIndex} |
Out[9]= | {Reversible, 2, 3, 3, {4, 5}, 1} |
In[10]:= | alex = Alexander[Knot[9, 43]][t] |
Out[10]= | -3 3 2 2 3
1 - t + -- - - - 2 t + 3 t - t
2 t
t |
In[11]:= | Conway[Knot[9, 43]][z] |
Out[11]= | 2 4 6
1 + z - 3 z - z |
In[12]:= | Select[AllKnots[], (alex === Alexander[#][t])&] |
Out[12]= | {Knot[9, 43]} |
In[13]:= | {KnotDet[Knot[9, 43]], KnotSignature[Knot[9, 43]]} |
Out[13]= | {13, 4} |
In[14]:= | Jones[Knot[9, 43]][q] |
Out[14]= | 2 3 4 5 6 7
1 - q + 2 q - 2 q + 2 q - 2 q + 2 q - q |
In[15]:= | Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&] |
Out[15]= | {Knot[9, 43], Knot[11, NonAlternating, 12]} |
In[16]:= | A2Invariant[Knot[9, 43]][q] |
Out[16]= | 2 4 6 12 18 20 26
1 + q + q + q - 2 q + q + q - q |
In[17]:= | HOMFLYPT[Knot[9, 43]][a, z] |
Out[17]= | 2 2 2 4 4 4 6
-8 3 4 3 4 z 7 z 4 z z 5 z z z
-a + -- - -- + -- + ---- - ---- + ---- + -- - ---- + -- - --
6 4 2 6 4 2 6 4 2 4
a a a a a a a a a a |
In[18]:= | Kauffman[Knot[9, 43]][a, z] |
Out[18]= | 2 2 2 2 3
-8 3 4 3 z z 2 z 9 z 14 z 7 z 2 z
-a - -- - -- - -- + -- + -- + ---- + ---- + ----- + ---- - ---- +
6 4 2 9 7 8 6 4 2 7
a a a a a a a a a a
3 3 4 4 4 5 5 5 6 6
z 3 z 8 z 13 z 5 z z 3 z 4 z 2 z 3 z
-- + ---- - ---- - ----- - ---- + -- - ---- - ---- + ---- + ---- +
5 3 6 4 2 7 5 3 6 4
a a a a a a a a a a
6 7 7
z z z
-- + -- + --
2 5 3
a a a |
In[19]:= | {Vassiliev[2][Knot[9, 43]], Vassiliev[3][Knot[9, 43]]} |
Out[19]= | {1, 2} |
In[20]:= | Kh[Knot[9, 43]][q, t] |
Out[20]= | 3
3 5 1 q 5 7 7 2 9 2 9 3 11 3
2 q + q + ---- + -- + q t + q t + q t + q t + q t + q t +
2 t
q t
11 4 13 4 15 5
q t + q t + q t |
In[21]:= | ColouredJones[Knot[9, 43], 2][q] |
Out[21]= | -2 1 2 3 4 6 7 8 9 10
-1 + q - - + 3 q - q - 3 q + 4 q - 3 q + 3 q + q - 3 q + q +
q
11 12 13 14 15 16 17
2 q - 2 q - q + 2 q - q - q + q |