K11a61
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Visit K11a61's page at Knotilus!
Visit K11a61's page at the original Knot Atlas! |
| K11a61 Quick Notes |
K11a61 Further Notes and Views
Knot presentations
| Planar diagram presentation | X4251 X8394 X16,6,17,5 X10,8,11,7 X2,9,3,10 X18,12,19,11 X20,14,21,13 X6,16,7,15 X22,18,1,17 X14,20,15,19 X12,22,13,21 |
| Gauss code | 1, -5, 2, -1, 3, -8, 4, -2, 5, -4, 6, -11, 7, -10, 8, -3, 9, -6, 10, -7, 11, -9 |
| Dowker-Thistlethwaite code | 4 8 16 10 2 18 20 6 22 14 12 |
| Conway Notation | [311,22,2] |
Three dimensional invariants
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Four dimensional invariants
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Polynomial invariants
| Alexander polynomial | 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 -6 t^2+26 t-39+26 t^{-1} -6 t^{-2} } |
| Conway polynomial | 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 -6 z^4+2 z^2+1} |
| 2nd Alexander ideal (db, data sources) | 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 \{1\}} |
| Determinant and Signature | { 103, 2 } |
| Jones polynomial | 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}+3 q^9-6 q^8+10 q^7-14 q^6+16 q^5-16 q^4+15 q^3-11 q^2+7 q-3+ q^{-1} } |
| HOMFLY-PT polynomial (db, data sources) | 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 -z^4 a^{-2} -3 z^4 a^{-4} -2 z^4 a^{-6} +2 z^2 a^{-2} -3 z^2 a^{-4} -z^2 a^{-6} +3 z^2 a^{-8} +z^2+2 a^{-2} - a^{-4} - a^{-6} +2 a^{-8} - a^{-10} } |
| Kauffman polynomial (db, data sources) | 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 z^{10} a^{-6} +z^{10} a^{-8} +4 z^9 a^{-5} +7 z^9 a^{-7} +3 z^9 a^{-9} +7 z^8 a^{-4} +11 z^8 a^{-6} +7 z^8 a^{-8} +3 z^8 a^{-10} +8 z^7 a^{-3} +3 z^7 a^{-5} -13 z^7 a^{-7} -7 z^7 a^{-9} +z^7 a^{-11} +6 z^6 a^{-2} -6 z^6 a^{-4} -32 z^6 a^{-6} -32 z^6 a^{-8} -12 z^6 a^{-10} +3 z^5 a^{-1} -11 z^5 a^{-3} -19 z^5 a^{-5} -3 z^5 a^{-7} -2 z^5 a^{-9} -4 z^5 a^{-11} -7 z^4 a^{-2} -5 z^4 a^{-4} +24 z^4 a^{-6} +36 z^4 a^{-8} +15 z^4 a^{-10} +z^4-2 z^3 a^{-1} +8 z^3 a^{-3} +13 z^3 a^{-5} +8 z^3 a^{-7} +10 z^3 a^{-9} +5 z^3 a^{-11} +6 z^2 a^{-2} +7 z^2 a^{-4} -9 z^2 a^{-6} -15 z^2 a^{-8} -6 z^2 a^{-10} -z^2-z a^{-3} -3 z a^{-5} -3 z a^{-7} -3 z a^{-9} -2 z a^{-11} -2 a^{-2} - a^{-4} + a^{-6} +2 a^{-8} + a^{-10} } |
| The A2 invariant | Data:K11a61/QuantumInvariant/A2/1,0 |
| The G2 invariant | Data:K11a61/QuantumInvariant/G2/1,0 |
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["K11a61"];
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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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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 -6 t^2+26 t-39+26 t^{-1} -6 t^{-2} } |
In[5]:=
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Conway[K][z]
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Out[5]=
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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 -6 z^4+2 z^2+1} |
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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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 \{1\}} |
In[7]:=
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{KnotDet[K], KnotSignature[K]}
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Out[7]=
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{ 103, 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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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}+3 q^9-6 q^8+10 q^7-14 q^6+16 q^5-16 q^4+15 q^3-11 q^2+7 q-3+ q^{-1} } |
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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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 -z^4 a^{-2} -3 z^4 a^{-4} -2 z^4 a^{-6} +2 z^2 a^{-2} -3 z^2 a^{-4} -z^2 a^{-6} +3 z^2 a^{-8} +z^2+2 a^{-2} - a^{-4} - a^{-6} +2 a^{-8} - a^{-10} } |
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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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 z^{10} a^{-6} +z^{10} a^{-8} +4 z^9 a^{-5} +7 z^9 a^{-7} +3 z^9 a^{-9} +7 z^8 a^{-4} +11 z^8 a^{-6} +7 z^8 a^{-8} +3 z^8 a^{-10} +8 z^7 a^{-3} +3 z^7 a^{-5} -13 z^7 a^{-7} -7 z^7 a^{-9} +z^7 a^{-11} +6 z^6 a^{-2} -6 z^6 a^{-4} -32 z^6 a^{-6} -32 z^6 a^{-8} -12 z^6 a^{-10} +3 z^5 a^{-1} -11 z^5 a^{-3} -19 z^5 a^{-5} -3 z^5 a^{-7} -2 z^5 a^{-9} -4 z^5 a^{-11} -7 z^4 a^{-2} -5 z^4 a^{-4} +24 z^4 a^{-6} +36 z^4 a^{-8} +15 z^4 a^{-10} +z^4-2 z^3 a^{-1} +8 z^3 a^{-3} +13 z^3 a^{-5} +8 z^3 a^{-7} +10 z^3 a^{-9} +5 z^3 a^{-11} +6 z^2 a^{-2} +7 z^2 a^{-4} -9 z^2 a^{-6} -15 z^2 a^{-8} -6 z^2 a^{-10} -z^2-z a^{-3} -3 z a^{-5} -3 z a^{-7} -3 z a^{-9} -2 z a^{-11} -2 a^{-2} - a^{-4} + a^{-6} +2 a^{-8} + a^{-10} } |
Vassiliev invariants
| V2 and V3: | (2, 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 are shown, along with their alternating sums 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 \chi} (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 K11a61. 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.
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{Include}(\textrm{ColouredJonesM.mhtml})}
In[1]:= |
<< KnotTheory` |
Loading KnotTheory` (version of August 17, 2005, 14:44:34)... | |
In[2]:= | Crossings[Knot[11, Alternating, 61]] |
Out[2]= | 11 |
In[3]:= | PD[Knot[11, Alternating, 61]] |
Out[3]= | PD[X[4, 2, 5, 1], X[8, 3, 9, 4], X[16, 6, 17, 5], X[10, 8, 11, 7],X[2, 9, 3, 10], X[18, 12, 19, 11], X[20, 14, 21, 13], X[6, 16, 7, 15], X[22, 18, 1, 17], X[14, 20, 15, 19],X[12, 22, 13, 21]] |
In[4]:= | GaussCode[Knot[11, Alternating, 61]] |
Out[4]= | GaussCode[1, -5, 2, -1, 3, -8, 4, -2, 5, -4, 6, -11, 7, -10, 8, -3, 9, -6, 10, -7, 11, -9] |
In[5]:= | BR[Knot[11, Alternating, 61]] |
Out[5]= | BR[Knot[11, Alternating, 61]] |
In[6]:= | alex = Alexander[Knot[11, Alternating, 61]][t] |
Out[6]= | 6 26 2 |
In[7]:= | Conway[Knot[11, Alternating, 61]][z] |
Out[7]= | 2 4 1 + 2 z - 6 z |
In[8]:= | Select[AllKnots[], (alex === Alexander[#][t])&] |
Out[8]= | {Knot[11, Alternating, 61]} |
In[9]:= | {KnotDet[Knot[11, Alternating, 61]], KnotSignature[Knot[11, Alternating, 61]]} |
Out[9]= | {103, 2} |
In[10]:= | J=Jones[Knot[11, Alternating, 61]][q] |
Out[10]= | 1 2 3 4 5 6 7 8 |
In[11]:= | Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&] |
Out[11]= | {Knot[11, Alternating, 61]} |
In[12]:= | A2Invariant[Knot[11, Alternating, 61]][q] |
Out[12]= | -4 -2 2 4 6 8 10 12 14 |
In[13]:= | Kauffman[Knot[11, Alternating, 61]][a, z] |
Out[13]= | 2-10 2 -6 -4 2 2 z 3 z 3 z 3 z z 2 6 z |
In[14]:= | {Vassiliev[2][Knot[11, Alternating, 61]], Vassiliev[3][Knot[11, Alternating, 61]]} |
Out[14]= | {0, 5} |
In[15]:= | Kh[Knot[11, Alternating, 61]][q, t] |
Out[15]= | 3 1 2 q 3 5 5 2 7 2 |


