K11a23
From Knot Atlas
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 (Knotscape image) | See the full Hoste-Thistlethwaite Table of 11 Crossing Knots.
Visit K11a23's page at Knotilus! Visit K11a23's page at the original Knot Atlas! |
[edit] Knot presentations
| Planar diagram presentation | X4251 X8493 X12,5,13,6 X2837 X18,10,19,9 X14,11,15,12 X6,13,7,14 X22,16,1,15 X20,18,21,17 X10,20,11,19 X16,22,17,21 |
| Gauss code | 1, -4, 2, -1, 3, -7, 4, -2, 5, -10, 6, -3, 7, -6, 8, -11, 9, -5, 10, -9, 11, -8 |
| Dowker-Thistlethwaite code | 4 8 12 2 18 14 6 22 20 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 | 2t3−10t2 + 24t−31 + 24t−1−10t−2 + 2t−3 |
| Conway polynomial | 2z6 + 2z4 + 2z2 + 1 |
| 2nd Alexander ideal (db, data sources) | {1} |
| Determinant and Signature | { 103, 2 } |
| Jones polynomial | q9−3q8 + 6q7−11q6 + 14q5−16q4 + 17q3−14q2 + 11q−6 + 3q−1−q−2 |
| HOMFLY-PT polynomial (db, data sources) | z6a−2 + z6a−4 + 3z4a−2 + 2z4a−4−2z4a−6−z4 + 5z2a−2 + 2z2a−4−4z2a−6 + z2a−8−2z2 + 3a−2 + a−4−3a−6 + a−8−1 |
| Kauffman polynomial (db, data sources) | z10a−4 + z10a−6 + 3z9a−3 + 6z9a−5 + 3z9a−7 + 4z8a−2 + 7z8a−4 + 7z8a−6 + 4z8a−8 + 4z7a−1 + z7a−3−7z7a−5−z7a−7 + 3z7a−9−z6a−2−15z6a−4−21z6a−6−9z6a−8 + z6a−10 + 3z6 + az5−4z5a−1−5z5a−3−4z5a−5−13z5a−7−9z5a−9−7z4a−2 + 12z4a−4 + 20z4a−6 + 4z4a−8−3z4a−10−6z4−2az3−2z3a−1 + 2z3a−3 + 11z3a−5 + 17z3a−7 + 8z3a−9 + 7z2a−2−4z2a−4−10z2a−6−z2a−8 + 2z2a−10 + 4z2 + az + 2za−1 + za−3−5za−5−8za−7−3za−9−3a−2 + a−4 + 3a−6 + a−8−1 |
| The A2 invariant | Data:K11a23/QuantumInvariant/A2/1,0 |
| The G2 invariant | Data:K11a23/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["K11a23"];
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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]=
| 2t3−10t2 + 24t−31 + 24t−1−10t−2 + 2t−3 |
In[5]:=
| Conway[K][z]
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Out[5]=
| 2z6 + 2z4 + 2z2 + 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]=
| { 103, 2 } |
In[8]:=
| Jones[K][q]
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KnotTheory::loading: Loading precomputed data in Jones4Knots`.
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Out[8]=
| q9−3q8 + 6q7−11q6 + 14q5−16q4 + 17q3−14q2 + 11q−6 + 3q−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]=
| z6a−2 + z6a−4 + 3z4a−2 + 2z4a−4−2z4a−6−z4 + 5z2a−2 + 2z2a−4−4z2a−6 + z2a−8−2z2 + 3a−2 + a−4−3a−6 + a−8−1 |
In[10]:=
| Kauffman[K][a, z]
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KnotTheory::loading: Loading precomputed data in Kauffman4Knots`.
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Out[10]=
| z10a−4 + z10a−6 + 3z9a−3 + 6z9a−5 + 3z9a−7 + 4z8a−2 + 7z8a−4 + 7z8a−6 + 4z8a−8 + 4z7a−1 + z7a−3−7z7a−5−z7a−7 + 3z7a−9−z6a−2−15z6a−4−21z6a−6−9z6a−8 + z6a−10 + 3z6 + az5−4z5a−1−5z5a−3−4z5a−5−13z5a−7−9z5a−9−7z4a−2 + 12z4a−4 + 20z4a−6 + 4z4a−8−3z4a−10−6z4−2az3−2z3a−1 + 2z3a−3 + 11z3a−5 + 17z3a−7 + 8z3a−9 + 7z2a−2−4z2a−4−10z2a−6−z2a−8 + 2z2a−10 + 4z2 + az + 2za−1 + za−3−5za−5−8za−7−3za−9−3a−2 + a−4 + 3a−6 + a−8−1 |
[edit] "Similar" Knots (within the Atlas)
Same Alexander/Conway Polynomial: {10_117, K11a111,}
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["K11a23"];
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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]=
| { 2t3−10t2 + 24t−31 + 24t−1−10t−2 + 2t−3, q9−3q8 + 6q7−11q6 + 14q5−16q4 + 17q3−14q2 + 11q−6 + 3q−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]=
| {10_117, K11a111,} |
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 = 2 is the signature of K11a23. 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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