T(17,2)
From Knot Atlas
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| See other torus knots
Visit T(17,2)'s page at Knotilus! Visit T(17,2)'s page at the original Knot Atlas! |
| Edit T(17,2) Quick Notes
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Edit T(17,2) Further Notes and Views
[edit] Knot presentations
| Planar diagram presentation | X15,33,16,32 X33,17,34,16 X17,1,18,34 X1,19,2,18 X19,3,20,2 X3,21,4,20 X21,5,22,4 X5,23,6,22 X23,7,24,6 X7,25,8,24 X25,9,26,8 X9,27,10,26 X27,11,28,10 X11,29,12,28 X29,13,30,12 X13,31,14,30 X31,15,32,14 |
| Gauss code | -4, 5, -6, 7, -8, 9, -10, 11, -12, 13, -14, 15, -16, 17, -1, 2, -3, 4, -5, 6, -7, 8, -9, 10, -11, 12, -13, 14, -15, 16, -17, 1, -2, 3 |
| Dowker-Thistlethwaite code | 18 20 22 24 26 28 30 32 34 2 4 6 8 10 12 14 16 |
| Braid presentation | |
[edit] Polynomial invariants
| Alexander polynomial | t8−t7 + t6−t5 + t4−t3 + t2−t + 1−t−1 + t−2−t−3 + t−4−t−5 + t−6−t−7 + t−8 |
| Conway polynomial | z16 + 15z14 + 91z12 + 286z10 + 495z8 + 462z6 + 210z4 + 36z2 + 1 |
| 2nd Alexander ideal (db, data sources) | {1} |
| Determinant and Signature | { 17, 16 } |
| Jones polynomial | −q25 + q24−q23 + q22−q21 + q20−q19 + q18−q17 + q16−q15 + q14−q13 + q12−q11 + q10 + q8 |
| HOMFLY-PT polynomial (db, data sources) | z16a−16 + 16z14a−16−z14a−18 + 105z12a−16−14z12a−18 + 364z10a−16−78z10a−18 + 715z8a−16−220z8a−18 + 792z6a−16−330z6a−18 + 462z4a−16−252z4a−18 + 120z2a−16−84z2a−18 + 9a−16−8a−18 |
| Kauffman polynomial (db, data sources) | z16a−16 + z16a−18 + z15a−17 + z15a−19−16z14a−16−15z14a−18 + z14a−20−14z13a−17−13z13a−19 + z13a−21 + 105z12a−16 + 92z12a−18−12z12a−20 + z12a−22 + 78z11a−17 + 66z11a−19−11z11a−21 + z11a−23−364z10a−16−298z10a−18 + 55z10a−20−10z10a−22 + z10a−24−220z9a−17−165z9a−19 + 45z9a−21−9z9a−23 + z9a−25 + 715z8a−16 + 550z8a−18−120z8a−20 + 36z8a−22−8z8a−24 + z8a−26 + 330z7a−17 + 210z7a−19−84z7a−21 + 28z7a−23−7z7a−25 + z7a−27−792z6a−16−582z6a−18 + 126z6a−20−56z6a−22 + 21z6a−24−6z6a−26 + z6a−28−252z5a−17−126z5a−19 + 70z5a−21−35z5a−23 + 15z5a−25−5z5a−27 + z5a−29 + 462z4a−16 + 336z4a−18−56z4a−20 + 35z4a−22−20z4a−24 + 10z4a−26−4z4a−28 + z4a−30 + 84z3a−17 + 28z3a−19−21z3a−21 + 15z3a−23−10z3a−25 + 6z3a−27−3z3a−29 + z3a−31−120z2a−16−92z2a−18 + 7z2a−20−6z2a−22 + 5z2a−24−4z2a−26 + 3z2a−28−2z2a−30 + z2a−32−8za−17−za−19 + za−21−za−23 + za−25−za−27 + za−29−za−31 + za−33 + 9a−16 + 8a−18 |
| The A2 invariant | Data:T(17,2)/QuantumInvariant/A2/1,0 |
| The G2 invariant | Data:T(17,2)/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["T(17,2)"];
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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]=
| t8−t7 + t6−t5 + t4−t3 + t2−t + 1−t−1 + t−2−t−3 + t−4−t−5 + t−6−t−7 + t−8 |
In[5]:=
| Conway[K][z]
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Out[5]=
| z16 + 15z14 + 91z12 + 286z10 + 495z8 + 462z6 + 210z4 + 36z2 + 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]=
| { 17, 16 } |
In[8]:=
| Jones[K][q]
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KnotTheory::loading: Loading precomputed data in Jones4Knots`.
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Out[8]=
| −q25 + q24−q23 + q22−q21 + q20−q19 + q18−q17 + q16−q15 + q14−q13 + q12−q11 + q10 + q8 |
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]=
| z16a−16 + 16z14a−16−z14a−18 + 105z12a−16−14z12a−18 + 364z10a−16−78z10a−18 + 715z8a−16−220z8a−18 + 792z6a−16−330z6a−18 + 462z4a−16−252z4a−18 + 120z2a−16−84z2a−18 + 9a−16−8a−18 |
In[10]:=
| Kauffman[K][a, z]
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KnotTheory::loading: Loading precomputed data in Kauffman4Knots`.
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Out[10]=
| z16a−16 + z16a−18 + z15a−17 + z15a−19−16z14a−16−15z14a−18 + z14a−20−14z13a−17−13z13a−19 + z13a−21 + 105z12a−16 + 92z12a−18−12z12a−20 + z12a−22 + 78z11a−17 + 66z11a−19−11z11a−21 + z11a−23−364z10a−16−298z10a−18 + 55z10a−20−10z10a−22 + z10a−24−220z9a−17−165z9a−19 + 45z9a−21−9z9a−23 + z9a−25 + 715z8a−16 + 550z8a−18−120z8a−20 + 36z8a−22−8z8a−24 + z8a−26 + 330z7a−17 + 210z7a−19−84z7a−21 + 28z7a−23−7z7a−25 + z7a−27−792z6a−16−582z6a−18 + 126z6a−20−56z6a−22 + 21z6a−24−6z6a−26 + z6a−28−252z5a−17−126z5a−19 + 70z5a−21−35z5a−23 + 15z5a−25−5z5a−27 + z5a−29 + 462z4a−16 + 336z4a−18−56z4a−20 + 35z4a−22−20z4a−24 + 10z4a−26−4z4a−28 + z4a−30 + 84z3a−17 + 28z3a−19−21z3a−21 + 15z3a−23−10z3a−25 + 6z3a−27−3z3a−29 + z3a−31−120z2a−16−92z2a−18 + 7z2a−20−6z2a−22 + 5z2a−24−4z2a−26 + 3z2a−28−2z2a−30 + z2a−32−8za−17−za−19 + za−21−za−23 + za−25−za−27 + za−29−za−31 + za−33 + 9a−16 + 8a−18 |
[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["T(17,2)"];
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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]=
| { t8−t7 + t6−t5 + t4−t3 + t2−t + 1−t−1 + t−2−t−3 + t−4−t−5 + t−6−t−7 + t−8, −q25 + q24−q23 + q22−q21 + q20−q19 + q18−q17 + q16−q15 + q14−q13 + q12−q11 + q10 + q8 } |
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 = 16 is the signature of T(17,2). 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 Torus Knot Page master template (intermediate). See/edit the Torus Knot_Splice_Base (expert). Back to the top. |
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