K11a250
From Knot Atlas
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 (Knotscape image) | See the full Hoste-Thistlethwaite Table of 11 Crossing Knots.
Visit K11a250's page at Knotilus! Visit K11a250's page at the original Knot Atlas! |
[edit] Knot presentations
| Planar diagram presentation | X6271 X8493 X12,5,13,6 X2837 X14,10,15,9 X18,11,19,12 X4,13,5,14 X20,16,21,15 X22,18,1,17 X10,19,11,20 X16,22,17,21 |
| Gauss code | 1, -4, 2, -7, 3, -1, 4, -2, 5, -10, 6, -3, 7, -5, 8, -11, 9, -6, 10, -8, 11, -9 |
| Dowker-Thistlethwaite code | 6 8 12 2 14 18 4 20 22 10 16 |
| A Braid Representative |
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| A Morse Link Presentation | 
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[edit] Three dimensional invariants
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[edit] Four dimensional invariants
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[edit] Polynomial invariants
| Alexander polynomial | t4−5t3 + 11t2−16t + 19−16t−1 + 11t−2−5t−3 + t−4 |
| Conway polynomial | z8 + 3z6 + z4−z2 + 1 |
| 2nd Alexander ideal (db, data sources) | {1} |
| Determinant and Signature | { 85, 4 } |
| Jones polynomial | −q9 + 3q8−6q7 + 10q6−12q5 + 13q4−13q3 + 11q2−8q + 5−2q−1 + q−2 |
| HOMFLY-PT polynomial (db, data sources) | z8a−4−2z6a−2 + 6z6a−4−z6a−6−10z4a−2 + 14z4a−4−4z4a−6 + z4−16z2a−2 + 16z2a−4−5z2a−6 + 4z2−8a−2 + 7a−4−2a−6 + 4 |
| Kauffman polynomial (db, data sources) | z10a−2 + z10a−4 + 2z9a−1 + 7z9a−3 + 5z9a−5 + 2z8a−2 + 11z8a−4 + 10z8a−6 + z8−10z7a−1−26z7a−3−4z7a−5 + 12z7a−7−27z6a−2−54z6a−4−23z6a−6 + 10z6a−8−6z6 + 16z5a−1 + 22z5a−3−26z5a−5−26z5a−7 + 6z5a−9 + 54z4a−2 + 68z4a−4 + 9z4a−6−15z4a−8 + 3z4a−10 + 13z4−8z3a−1 + 4z3a−3 + 31z3a−5 + 15z3a−7−3z3a−9 + z3a−11−37z2a−2−33z2a−4−2z2a−6 + 6z2a−8−12z2−5za−3−9za−5−4za−7 + 8a−2 + 7a−4 + 2a−6 + 4 |
| The A2 invariant | q6 + q4 + q2 + 2−2q−2−2q−6−2q−8 + 2q−10−2q−12 + 4q−14 + q−18 + q−20−2q−22 + q−24−q−26 |
| The G2 invariant | Data:K11a250/QuantumInvariant/G2/1,0 |
Further Quantum Invariants
Computer Talk
The above data is available with the Mathematica package
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]:=
| 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]:=
| K = Knot["K11a250"];
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In[4]:=
| Alexander[K][t]
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KnotTheory::loading: Loading precomputed data in PD4Knots`.
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Out[4]=
| t4−5t3 + 11t2−16t + 19−16t−1 + 11t−2−5t−3 + t−4 |
In[5]:=
| Conway[K][z]
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Out[5]=
| z8 + 3z6 + z4−z2 + 1 |
In[6]:=
| 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]=
| {1} |
In[7]:=
| {KnotDet[K], KnotSignature[K]}
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Out[7]=
| { 85, 4 } |
In[8]:=
| Jones[K][q]
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KnotTheory::loading: Loading precomputed data in Jones4Knots`.
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Out[8]=
| −q9 + 3q8−6q7 + 10q6−12q5 + 13q4−13q3 + 11q2−8q + 5−2q−1 + q−2 |
In[9]:=
| HOMFLYPT[K][a, z]
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KnotTheory::credits: The HOMFLYPT program was written by Scott Morrison.
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Out[9]=
| z8a−4−2z6a−2 + 6z6a−4−z6a−6−10z4a−2 + 14z4a−4−4z4a−6 + z4−16z2a−2 + 16z2a−4−5z2a−6 + 4z2−8a−2 + 7a−4−2a−6 + 4 |
In[10]:=
| Kauffman[K][a, z]
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KnotTheory::loading: Loading precomputed data in Kauffman4Knots`.
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Out[10]=
| z10a−2 + z10a−4 + 2z9a−1 + 7z9a−3 + 5z9a−5 + 2z8a−2 + 11z8a−4 + 10z8a−6 + z8−10z7a−1−26z7a−3−4z7a−5 + 12z7a−7−27z6a−2−54z6a−4−23z6a−6 + 10z6a−8−6z6 + 16z5a−1 + 22z5a−3−26z5a−5−26z5a−7 + 6z5a−9 + 54z4a−2 + 68z4a−4 + 9z4a−6−15z4a−8 + 3z4a−10 + 13z4−8z3a−1 + 4z3a−3 + 31z3a−5 + 15z3a−7−3z3a−9 + z3a−11−37z2a−2−33z2a−4−2z2a−6 + 6z2a−8−12z2−5za−3−9za−5−4za−7 + 8a−2 + 7a−4 + 2a−6 + 4 |
[edit] "Similar" Knots (within the Atlas)
Same Alexander/Conway Polynomial: {}
Same Jones Polynomial (up to mirroring, 
):
{}
Computer Talk
The above data is available with the Mathematica package
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]:=
| 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]:=
| K = Knot["K11a250"];
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In[4]:=
| {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]=
| { t4−5t3 + 11t2−16t + 19−16t−1 + 11t−2−5t−3 + t−4, −q9 + 3q8−6q7 + 10q6−12q5 + 13q4−13q3 + 11q2−8q + 5−2q−1 + q−2 } |
In[5]:=
| 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]=
| {} |
In[6]:=
| 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]=
| {} |
[edit] Khovanov Homology
| The coefficients of the monomials trqj are shown, along with their alternating sums χ (fixed j, alternation over r). The squares with yellow highlighting are those on the "critical diagonals", where j−2r = s + 1 or j−2r = s−1, where s = 4 is the signature of K11a250. 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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[edit] Computer Talk
Much of the above data can be recomputed by Mathematica using the packageKnotTheory`. See A Sample KnotTheory` Session.
[edit] Modifying This Page
| Read me first: Modifying Knot Pages.
See/edit the Hoste-Thistlethwaite Knot Page master template (intermediate). See/edit the Hoste-Thistlethwaite_Splice_Base (expert). Back to the top. |
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