In[1]:= |
<< KnotTheory` |
Loading KnotTheory` (version of August 29, 2005, 15:27:48)... |
In[2]:= | PD[Knot[9, 25]] |
Out[2]= | PD[X[1, 4, 2, 5], X[3, 8, 4, 9], X[5, 12, 6, 13], X[9, 17, 10, 16],
X[13, 18, 14, 1], X[17, 14, 18, 15], X[15, 11, 16, 10],
X[11, 6, 12, 7], X[7, 2, 8, 3]] |
In[3]:= | GaussCode[Knot[9, 25]] |
Out[3]= | GaussCode[-1, 9, -2, 1, -3, 8, -9, 2, -4, 7, -8, 3, -5, 6, -7, 4, -6, 5] |
In[4]:= | DTCode[Knot[9, 25]] |
Out[4]= | DTCode[4, 8, 12, 2, 16, 6, 18, 10, 14] |
In[5]:= | br = BR[Knot[9, 25]] |
Out[5]= | BR[5, {-1, -1, 2, -1, -3, -2, -2, 4, -3, 4}] |
In[6]:= | {First[br], Crossings[br]} |
Out[6]= | {5, 10} |
In[7]:= | BraidIndex[Knot[9, 25]] |
Out[7]= | 5 |
In[8]:= | Show[DrawMorseLink[Knot[9, 25]]] |
| |
Out[8]= | -Graphics- |
In[9]:= | (#[Knot[9, 25]]&) /@ {SymmetryType, UnknottingNumber, ThreeGenus, BridgeIndex, SuperBridgeIndex, NakanishiIndex} |
Out[9]= | {Reversible, 2, 2, 3, {4, 7}, 1} |
In[10]:= | alex = Alexander[Knot[9, 25]][t] |
Out[10]= | 3 12 2
-17 - -- + -- + 12 t - 3 t
2 t
t |
In[11]:= | Conway[Knot[9, 25]][z] |
Out[11]= | 4
1 - 3 z |
In[12]:= | Select[AllKnots[], (alex === Alexander[#][t])&] |
Out[12]= | {Knot[9, 25], Knot[11, NonAlternating, 134]} |
In[13]:= | {KnotDet[Knot[9, 25]], KnotSignature[Knot[9, 25]]} |
Out[13]= | {47, -2} |
In[14]:= | Jones[Knot[9, 25]][q] |
Out[14]= | -8 3 5 7 8 8 7 5
-2 - q + -- - -- + -- - -- + -- - -- + - + q
7 6 5 4 3 2 q
q q q q q q |
In[15]:= | Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&] |
Out[15]= | {Knot[9, 25], Knot[11, NonAlternating, 25]} |
In[16]:= | A2Invariant[Knot[9, 25]][q] |
Out[16]= | -26 -24 2 -18 2 2 2 -6 -4 3 4
-q - q + --- + q + --- - --- - --- + q - q + -- + q
22 16 14 10 2
q q q q q |
In[17]:= | HOMFLYPT[Knot[9, 25]][a, z] |
Out[17]= | 2 4 6 8 2 4 2 6 2 2 4 4 4
1 + a - 3 a + 3 a - a + z - 4 a z + 3 a z - a z - 2 a z |
In[18]:= | Kauffman[Knot[9, 25]][a, z] |
Out[18]= | 2 4 6 8 3 5 7 9 2
1 - a - 3 a - 3 a - a - a z - a z + a z + a z - 2 z +
2 2 4 2 6 2 8 2 3 3 3
2 a z + 13 a z + 13 a z + 4 a z - 2 a z + 3 a z +
5 3 7 3 9 3 4 2 4 4 4 6 4
5 a z - 2 a z - 2 a z + z - 3 a z - 15 a z - 18 a z -
8 4 5 3 5 5 5 7 5 9 5 2 6
7 a z + 2 a z - 3 a z - 10 a z - 4 a z + a z + 3 a z +
4 6 6 6 8 6 3 7 5 7 7 7 4 8
6 a z + 6 a z + 3 a z + 3 a z + 6 a z + 3 a z + a z +
6 8
a z |
In[19]:= | {Vassiliev[2][Knot[9, 25]], Vassiliev[3][Knot[9, 25]]} |
Out[19]= | {0, -1} |
In[20]:= | Kh[Knot[9, 25]][q, t] |
Out[20]= | 2 4 1 2 1 3 2 4 3
-- + - + ------ + ------ + ------ + ------ + ------ + ------ + ----- +
3 q 17 7 15 6 13 6 13 5 11 5 11 4 9 4
q q t q t q t q t q t q t q t
4 4 4 4 3 4 t 3 2
----- + ----- + ----- + ----- + ---- + ---- + - + q t + q t
9 3 7 3 7 2 5 2 5 3 q
q t q t q t q t q t q t |
In[21]:= | ColouredJones[Knot[9, 25], 2][q] |
Out[21]= | -23 3 10 12 7 30 20 25 52 19
-11 + q - --- + --- - --- - --- + --- - --- - --- + --- - --- -
22 20 19 18 17 16 15 14 13
q q q q q q q q q
45 65 12 56 62 3 50 43 4 31 19 4
--- + --- - --- - -- + -- - -- - -- + -- + -- - -- + -- + - + 5 q +
12 11 10 9 8 7 6 5 4 3 2 q
q q q q q q q q q q q
2 3 4
q - 2 q + q |