9 48
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![]() (KnotPlot image) |
See the full Rolfsen Knot Table. Visit 9 48's page at the Knot Server (KnotPlot driven, includes 3D interactive images!) |
Knot presentations
| Planar diagram presentation | X1425 X12,8,13,7 X3,11,4,10 X11,3,12,2 X14,6,15,5 X6,14,7,13 X15,18,16,1 X9,17,10,16 X17,9,18,8 |
| Gauss code | -1, 4, -3, 1, 5, -6, 2, 9, -8, 3, -4, -2, 6, -5, -7, 8, -9, 7 |
| Dowker-Thistlethwaite code | 4 10 -14 -12 16 2 -6 18 8 |
| Conway Notation | [21,21,21-] |
| Minimum Braid Representative | A Morse Link Presentation | An Arc Presentation | ||||
Length is 11, width is 4, Braid index is 4 |
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![]() [{10, 4}, {5, 3}, {4, 7}, {2, 5}, {8, 6}, {7, 1}, {3, 8}, {9, 2}, {6, 10}, {1, 9}] |
[edit Notes on presentations of 9 48]
KnotTheory`. Your input (in red) is realistic; all else should have the same content as in a real mathematica session, but with different formatting.
(The path below may be different on your system, and possibly also the KnotTheory` date)
In[1]:=
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AppendTo[$Path, "C:/drorbn/projects/KAtlas/"];
<< KnotTheory`
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Loading KnotTheory` version of May 31, 2006, 14:15:20.091.
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In[3]:=
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K = Knot["9 48"];
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In[4]:=
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PD[K]
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KnotTheory::loading: Loading precomputed data in PD4Knots`.
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Out[4]=
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X1425 X12,8,13,7 X3,11,4,10 X11,3,12,2 X14,6,15,5 X6,14,7,13 X15,18,16,1 X9,17,10,16 X17,9,18,8 |
In[5]:=
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GaussCode[K]
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Out[5]=
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-1, 4, -3, 1, 5, -6, 2, 9, -8, 3, -4, -2, 6, -5, -7, 8, -9, 7 |
In[6]:=
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DTCode[K]
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Out[6]=
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4 10 -14 -12 16 2 -6 18 8 |
(The path below may be different on your system)
In[7]:=
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AppendTo[$Path, "C:/bin/LinKnot/"];
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In[8]:=
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ConwayNotation[K]
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Out[8]=
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[21,21,21-] |
In[9]:=
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br = BR[K]
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KnotTheory::credits: The minimum braids representing the knots with up to 10 crossings were provided by Thomas Gittings. See arXiv:math.GT/0401051.
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Out[9]=
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Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \textrm{BR}(4,\{1,1,2,-1,2,1,-3,2,-1,2,-3\})} |
In[10]:=
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{First[br], Crossings[br], BraidIndex[K]}
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KnotTheory::credits: The braid index data known to KnotTheory` is taken from Charles Livingston's http://www.indiana.edu/~knotinfo/.
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KnotTheory::loading: Loading precomputed data in IndianaData`.
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Out[10]=
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{ 4, 11, 4 } |
In[11]:=
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Show[BraidPlot[br]]
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Out[11]=
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-Graphics- |
In[12]:=
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Show[DrawMorseLink[K]]
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KnotTheory::credits: "MorseLink was added to KnotTheory` by Siddarth Sankaran at the University of Toronto in the summer of 2005."
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KnotTheory::credits: "DrawMorseLink was written by Siddarth Sankaran at the University of Toronto in the summer of 2005."
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Out[12]=
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-Graphics- |
In[13]:=
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ap = ArcPresentation[K]
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Out[13]=
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ArcPresentation[{10, 4}, {5, 3}, {4, 7}, {2, 5}, {8, 6}, {7, 1}, {3, 8}, {9, 2}, {6, 10}, {1, 9}] |
In[14]:=
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Draw[ap]
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Out[14]=
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-Graphics- |
Three dimensional invariants
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Four dimensional invariants
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Polynomial invariants
A1 Invariants.
| Weight | Invariant |
|---|---|
| 1 | |
| 2 | |
| 3 | |
| 4 | |
| 5 |
A2 Invariants.
| Weight | Invariant |
|---|---|
| 1,0 | |
| 1,1 | |
| 2,0 |
A3 Invariants.
| Weight | Invariant |
|---|---|
| 0,1,0 | Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle q^8-2 q^6+3 q^2-4+3 q^{-2} +4 q^{-4} -6 q^{-6} + q^{-10} -4 q^{-12} +6 q^{-16} +6 q^{-18} +7 q^{-20} +4 q^{-22} +6 q^{-24} -3 q^{-26} -9 q^{-28} - q^{-30} -6 q^{-32} -7 q^{-34} +4 q^{-36} + q^{-38} - q^{-40} +3 q^{-42} } |
| 1,0,0 | Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle q^5-q^3- q^{-1} + q^{-3} - q^{-5} + q^{-7} + q^{-9} + q^{-11} +2 q^{-13} +2 q^{-15} +3 q^{-17} + q^{-21} -2 q^{-23} -2 q^{-25} -2 q^{-27} } |
A4 Invariants.
| Weight | Invariant |
|---|---|
| 0,1,0,0 | Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle q^{10}-q^8-2 q^6+2 q^4+q^2-2+5 q^{-4} + q^{-6} -5 q^{-8} +3 q^{-12} -5 q^{-14} -7 q^{-16} +3 q^{-18} + q^{-20} + q^{-22} +9 q^{-24} +14 q^{-26} +9 q^{-28} +9 q^{-30} +10 q^{-32} + q^{-34} -10 q^{-36} -8 q^{-38} -7 q^{-40} -13 q^{-42} -10 q^{-44} - q^{-46} +2 q^{-48} +2 q^{-52} +4 q^{-54} +3 q^{-56} } |
| 1,0,0,0 | Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle q^6-q^4- q^{-2} + q^{-4} - q^{-6} + q^{-8} + q^{-12} + q^{-14} +2 q^{-16} +2 q^{-18} +3 q^{-20} +3 q^{-22} + q^{-26} -2 q^{-28} -2 q^{-30} -2 q^{-32} -2 q^{-34} } |
B2 Invariants.
| Weight | Invariant |
|---|---|
| 0,1 | Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle q^8-2 q^6+4 q^4-5 q^2+4-5 q^{-2} +4 q^{-4} -2 q^{-6} +3 q^{-10} -4 q^{-12} +8 q^{-14} -8 q^{-16} +10 q^{-18} -7 q^{-20} +8 q^{-22} -4 q^{-24} +3 q^{-26} + q^{-28} -3 q^{-30} +4 q^{-32} -5 q^{-34} +4 q^{-36} -5 q^{-38} +3 q^{-40} -3 q^{-42} } |
| 1,0 | Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle q^{14}-2 q^{10}-2 q^8+2 q^6+4 q^4-q^2-4- q^{-2} +6 q^{-4} +4 q^{-6} -4 q^{-8} -5 q^{-10} +3 q^{-14} - q^{-16} -4 q^{-18} -2 q^{-20} +4 q^{-22} +3 q^{-24} +6 q^{-30} +7 q^{-32} +3 q^{-34} -2 q^{-36} +2 q^{-38} +4 q^{-40} -7 q^{-44} -5 q^{-46} + q^{-48} + q^{-50} -5 q^{-52} -7 q^{-54} - q^{-56} +4 q^{-58} +3 q^{-60} -2 q^{-62} -2 q^{-64} + q^{-66} +3 q^{-68} } |
D4 Invariants.
| Weight | Invariant |
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| 1,0,0,0 | Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle q^{10}-2 q^8+2 q^6-3 q^4+4 q^2-4+4 q^{-2} -3 q^{-4} +4 q^{-6} -2 q^{-8} - q^{-10} -2 q^{-14} +2 q^{-16} -6 q^{-18} +6 q^{-20} -3 q^{-22} +12 q^{-24} - q^{-26} +12 q^{-28} +10 q^{-32} - q^{-34} -5 q^{-38} -6 q^{-40} -2 q^{-42} -8 q^{-44} - q^{-46} -6 q^{-48} +4 q^{-50} -2 q^{-52} +4 q^{-54} -2 q^{-56} +3 q^{-58} } |
G2 Invariants.
| Weight | Invariant |
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| 1,0 | Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle q^{18}-2 q^{16}+4 q^{14}-6 q^{12}+3 q^{10}+q^8-6 q^6+14 q^4-14 q^2+15-8 q^{-2} -7 q^{-4} +16 q^{-6} -23 q^{-8} +18 q^{-10} -9 q^{-12} -5 q^{-14} +13 q^{-16} -13 q^{-18} +10 q^{-20} + q^{-22} -13 q^{-24} +16 q^{-26} -13 q^{-28} + q^{-30} +15 q^{-32} -24 q^{-34} +27 q^{-36} -14 q^{-38} +11 q^{-40} +7 q^{-42} -22 q^{-44} +29 q^{-46} -22 q^{-48} +19 q^{-50} -2 q^{-52} -14 q^{-54} +21 q^{-56} -8 q^{-58} +6 q^{-60} + q^{-62} -15 q^{-64} +14 q^{-66} -5 q^{-68} -8 q^{-70} +14 q^{-72} -24 q^{-74} +21 q^{-76} -5 q^{-78} -10 q^{-80} +11 q^{-82} -18 q^{-84} +16 q^{-86} -9 q^{-88} -2 q^{-90} +3 q^{-92} -7 q^{-94} +7 q^{-96} -2 q^{-98} + q^{-100} + q^{-102} } |
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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["9 48"];
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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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{ 27, 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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"Similar" Knots (within the Atlas)
Same Alexander/Conway Polynomial: {K11n1,}
Same Jones Polynomial (up to mirroring, ): {}
KnotTheory`. Your input (in red) is realistic; all else should have the same content as in a real mathematica session, but with different formatting.
(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 May 31, 2006, 14:15:20.091.
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In[3]:=
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K = Knot["9 48"];
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In[4]:=
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{A = Alexander[K][t], J = Jones[K][q]}
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KnotTheory::loading: Loading precomputed data in PD4Knots`.
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KnotTheory::loading: Loading precomputed data in Jones4Knots`.
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Out[4]=
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{ Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle -t^2+7 t-11+7 t^{-1} - t^{-2} } , Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle -2 q^6+3 q^5-4 q^4+6 q^3-4 q^2+4 q-3+ q^{-1} } } |
In[5]:=
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DeleteCases[Select[AllKnots[], (A === Alexander[#][t]) &], K]
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KnotTheory::loading: Loading precomputed data in DTCode4KnotsTo11`.
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KnotTheory::credits: The GaussCode to PD conversion was written by Siddarth Sankaran at the University of Toronto in the summer of 2005.
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Out[5]=
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{K11n1,} |
In[6]:=
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DeleteCases[
Select[
AllKnots[],
(J === Jones[#][q] || (J /. q -> 1/q) === Jones[#][q]) &
],
K
]
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KnotTheory::loading: Loading precomputed data in Jones4Knots11`.
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Out[6]=
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{} |
Vassiliev invariants
| V2 and V3: | (3, 5) |
| 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 Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle t^rq^j} are shown, along with their alternating sums (fixed Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle j} , alternation over Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle r} ). The squares with yellow highlighting are those on the "critical diagonals", where Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle j-2r=s+1} or Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle j-2r=s-1} , where Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle s=} 2 is the signature of 9 48. 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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The Coloured Jones Polynomials
| Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle n} | Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle J_n} |
| 2 | Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle q^{18}+2 q^{17}-6 q^{16}+q^{15}+10 q^{14}-15 q^{13}-2 q^{12}+23 q^{11}-21 q^{10}-7 q^9+32 q^8-21 q^7-10 q^6+29 q^5-15 q^4-12 q^3+20 q^2-6 q-9+9 q^{-1} -3 q^{-3} + q^{-4} } |
| 3 | Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle -2 q^{35}+q^{33}+9 q^{32}-5 q^{31}-12 q^{30}-q^{29}+27 q^{28}+5 q^{27}-37 q^{26}-19 q^{25}+49 q^{24}+32 q^{23}-58 q^{22}-50 q^{21}+61 q^{20}+68 q^{19}-67 q^{18}-74 q^{17}+58 q^{16}+92 q^{15}-62 q^{14}-86 q^{13}+47 q^{12}+94 q^{11}-44 q^{10}-83 q^9+26 q^8+79 q^7-15 q^6-67 q^5+2 q^4+53 q^3+8 q^2-37 q-12+22 q^{-1} +14 q^{-2} -13 q^{-3} -9 q^{-4} +4 q^{-5} +5 q^{-6} -3 q^{-8} + q^{-9} } |
| 4 | Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle q^{58}+2 q^{57}-6 q^{55}-4 q^{54}-5 q^{53}+14 q^{52}+21 q^{51}-9 q^{50}-20 q^{49}-46 q^{48}+20 q^{47}+76 q^{46}+25 q^{45}-23 q^{44}-137 q^{43}-25 q^{42}+133 q^{41}+109 q^{40}+30 q^{39}-242 q^{38}-127 q^{37}+145 q^{36}+208 q^{35}+136 q^{34}-314 q^{33}-238 q^{32}+114 q^{31}+273 q^{30}+247 q^{29}-336 q^{28}-312 q^{27}+66 q^{26}+293 q^{25}+324 q^{24}-321 q^{23}-342 q^{22}+18 q^{21}+278 q^{20}+353 q^{19}-269 q^{18}-327 q^{17}-36 q^{16}+222 q^{15}+350 q^{14}-178 q^{13}-268 q^{12}-93 q^{11}+127 q^{10}+306 q^9-70 q^8-166 q^7-119 q^6+22 q^5+213 q^4+6 q^3-58 q^2-90 q-41+102 q^{-1} +24 q^{-2} +5 q^{-3} -39 q^{-4} -40 q^{-5} +31 q^{-6} +9 q^{-7} +14 q^{-8} -6 q^{-9} -16 q^{-10} +4 q^{-11} +5 q^{-13} -3 q^{-15} + q^{-16} } |
Computer Talk
Much of the above data can be recomputed by Mathematica using the package KnotTheory`. See A Sample KnotTheory` Session, or any of the Computer Talk sections above.
Modifying This Page
| Read me first: Modifying Knot Pages
See/edit the Rolfsen Knot Page master template (intermediate). See/edit the Rolfsen_Splice_Base (expert). Back to the top. |
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