10 148: Difference between revisions
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{{Vassiliev Invariants}} |
{{Vassiliev Invariants}} |
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{{Khovanov Homology|table=<table border=1> |
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The coefficients of the monomials <math>t^rq^j</math> are shown, along with their alternating sums <math>\chi</math> (fixed <math>j</math>, alternation over <math>r</math>). The squares with <font class=HLYellow>yellow</font> highlighting are those on the "critical diagonals", where <math>j-2r=s+1</math> or <math>j-2r=s+1</math>, where <math>s=</math>{{Data:{{PAGENAME}}/Signature}} is the signature of {{PAGENAME}}. Nonzero entries off the critical diagonals (if any exist) are highlighted in <font class=HLRed>red</font>. |
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<tr align=center><td>-15</td><td bgcolor=yellow> </td><td bgcolor=yellow>1</td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td>1</td></tr> |
<tr align=center><td>-15</td><td bgcolor=yellow> </td><td bgcolor=yellow>1</td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td>1</td></tr> |
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<tr align=center><td>-17</td><td bgcolor=yellow>1</td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td>-1</td></tr> |
<tr align=center><td>-17</td><td bgcolor=yellow>1</td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td> </td><td>-1</td></tr> |
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q t q t q t q t q t q t</nowiki></pre></td></tr> |
q t q t q t q t q t q t</nowiki></pre></td></tr> |
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[[Category:Knot Page]] |
Revision as of 19:09, 28 August 2005
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Visit 10 148's page at the Knot Server (KnotPlot driven, includes 3D interactive images!)
Visit 10 148's page at Knotilus! Visit 10 148's page at the original Knot Atlas! |
10 148 Further Notes and Views
Knot presentations
Planar diagram presentation | X4251 X8493 X5,12,6,13 X13,18,14,19 X9,16,10,17 X17,10,18,11 X15,20,16,1 X19,14,20,15 X11,6,12,7 X2837 |
Gauss code | 1, -10, 2, -1, -3, 9, 10, -2, -5, 6, -9, 3, -4, 8, -7, 5, -6, 4, -8, 7 |
Dowker-Thistlethwaite code | 4 8 -12 2 -16 -6 -18 -20 -10 -14 |
Conway Notation | [(3,2)(3,2-)] |
Three dimensional invariants
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Four dimensional invariants
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Polynomial invariants
A1 Invariants.
Weight | Invariant |
---|---|
1 | |
2 | |
3 | |
5 | |
6 |
A2 Invariants.
Weight | Invariant |
---|---|
1,0 | |
1,1 | |
2,0 |
A3 Invariants.
Weight | Invariant |
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0,1,0 | |
1,0,0 | |
1,0,1 |
A4 Invariants.
Weight | Invariant |
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0,1,0,0 | |
1,0,0,0 |
B2 Invariants.
Weight | Invariant |
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0,1 | |
1,0 |
D4 Invariants.
Weight | Invariant |
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1,0,0,0 |
G2 Invariants.
Weight | Invariant |
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1,0 |
.
KnotTheory`
, as shown in the (simulated) Mathematica session below. Your input (in red) is realistic; all else should have the same content as in a real mathematica session, but with different formatting. This Mathematica session is also available (albeit only for the knot 5_2) as the notebook PolynomialInvariantsSession.nb.
(The path below may be different on your system, and possibly also the KnotTheory` date)
In[1]:=
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AppendTo[$Path, "C:/drorbn/projects/KAtlas/"];
<< KnotTheory`
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Loading KnotTheory` version of August 31, 2006, 11:25:27.5625.
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In[3]:=
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K = Knot["10 148"];
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In[4]:=
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Alexander[K][t]
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KnotTheory::loading: Loading precomputed data in PD4Knots`.
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Out[4]=
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In[5]:=
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Conway[K][z]
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Out[5]=
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In[6]:=
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Alexander[K, 2][t]
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KnotTheory::credits: The program Alexander[K, r] to compute Alexander ideals was written by Jana Archibald at the University of Toronto in the summer of 2005.
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Out[6]=
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In[7]:=
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{KnotDet[K], KnotSignature[K]}
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Out[7]=
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{ 31, -2 } |
In[8]:=
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Jones[K][q]
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KnotTheory::loading: Loading precomputed data in Jones4Knots`.
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Out[8]=
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In[9]:=
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HOMFLYPT[K][a, z]
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KnotTheory::credits: The HOMFLYPT program was written by Scott Morrison.
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Out[9]=
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In[10]:=
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Kauffman[K][a, z]
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KnotTheory::loading: Loading precomputed data in Kauffman4Knots`.
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Out[10]=
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Vassiliev invariants
V2 and V3: | (4, -7) |
V2,1 through V6,9: |
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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 10 148. Nonzero entries off the critical diagonals (if any exist) are highlighted in red. |
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Integral Khovanov Homology
(db, data source) |
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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, 148]] |
Out[2]= | 10 |
In[3]:= | PD[Knot[10, 148]] |
Out[3]= | PD[X[4, 2, 5, 1], X[8, 4, 9, 3], X[5, 12, 6, 13], X[13, 18, 14, 19],X[9, 16, 10, 17], X[17, 10, 18, 11], X[15, 20, 16, 1],X[19, 14, 20, 15], X[11, 6, 12, 7], X[2, 8, 3, 7]] |
In[4]:= | GaussCode[Knot[10, 148]] |
Out[4]= | GaussCode[1, -10, 2, -1, -3, 9, 10, -2, -5, 6, -9, 3, -4, 8, -7, 5, -6, 4, -8, 7] |
In[5]:= | BR[Knot[10, 148]] |
Out[5]= | BR[3, {-1, -1, -1, -1, -2, 1, 1, -2, 1, -2}] |
In[6]:= | alex = Alexander[Knot[10, 148]][t] |
Out[6]= | -3 3 7 2 3 |
In[7]:= | Conway[Knot[10, 148]][z] |
Out[7]= | 2 4 6 1 + 4 z + 3 z + z |
In[8]:= | Select[AllKnots[], (alex === Alexander[#][t])&] |
Out[8]= | {Knot[10, 148]} |
In[9]:= | {KnotDet[Knot[10, 148]], KnotSignature[Knot[10, 148]]} |
Out[9]= | {31, -2} |
In[10]:= | J=Jones[Knot[10, 148]][q] |
Out[10]= | -8 2 4 5 5 6 4 3 |
In[11]:= | Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&] |
Out[11]= | {Knot[10, 148]} |
In[12]:= | A2Invariant[Knot[10, 148]][q] |
Out[12]= | -24 2 -18 -16 3 -10 2 -6 -4 -2 |
In[13]:= | Kauffman[Knot[10, 148]][a, z] |
Out[13]= | 2 4 6 3 5 7 9 2 2 |
In[14]:= | {Vassiliev[2][Knot[10, 148]], Vassiliev[3][Knot[10, 148]]} |
Out[14]= | {0, -7} |
In[15]:= | Kh[Knot[10, 148]][q, t] |
Out[15]= | 2 2 1 1 1 3 1 2 3 |