9 30

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9_29

9_31

Contents

Image:9 30.gif
(KnotPlot image)

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[edit] Knot presentations

Planar diagram presentation X4251 X10,6,11,5 X8394 X2,9,3,10 X14,8,15,7 X18,15,1,16 X16,11,17,12 X12,17,13,18 X6,14,7,13
Gauss code 1, -4, 3, -1, 2, -9, 5, -3, 4, -2, 7, -8, 9, -5, 6, -7, 8, -6
Dowker-Thistlethwaite code 4 8 10 14 2 16 6 18 12
Conway Notation [211,21,2]


Minimum Braid Representative A Morse Link Presentation An Arc Presentation
Image:BraidPart3.gifImage:BraidPart3.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart3.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gif
Image:BraidPart4.gifImage:BraidPart4.gifImage:BraidPart1.gifImage:BraidPart1.gifImage:BraidPart4.gifImage:BraidPart1.gifImage:BraidPart0.gifImage:BraidPart1.gifImage:BraidPart0.gif
Image:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart2.gifImage:BraidPart2.gifImage:BraidPart0.gifImage:BraidPart2.gifImage:BraidPart3.gifImage:BraidPart2.gifImage:BraidPart3.gif
Image:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart4.gifImage:BraidPart0.gifImage:BraidPart4.gif

Length is 9, width is 4,

Braid index is 4

Image:9 30_ML.gif Image:9 30_AP.gif
[{2, 12}, {1, 6}, {11, 4}, {12, 10}, {8, 11}, {7, 9}, {6, 8}, {3, 5}, {4, 7}, {5, 2}, {9, 3}, {10, 1}]

[edit Notes on presentations of 9 30]


[edit] Three dimensional invariants

Symmetry type Reversible
Unknotting number 1
3-genus 3
Bridge index 3
Super bridge index {4,6}
Nakanishi index 1
Maximal Thurston-Bennequin number [-6][-5]
Hyperbolic Volume 11.9545
A-Polynomial See Data:9 30/A-polynomial

[edit Notes for 9 30's three dimensional invariants]

[edit] Four dimensional invariants

Smooth 4 genus 1
Topological 4 genus 1
Concordance genus 3
Rasmussen s-Invariant 0

[edit Notes for 9 30's four dimensional invariants]

[edit] Polynomial invariants

Alexander polynomial t3 + 5t2−12t + 17−12t−1 + 5t−2t−3
Conway polynomial z6z4z2 + 1
2nd Alexander ideal (db, data sources) {1}
Determinant and Signature { 53, 0 }
Jones polynomial q4−3q3 + 6q2−8q + 9−9q−1 + 8q−2−5q−3 + 3q−4q−5
HOMFLY-PT polynomial (db, data sources) z6 + 2a2z4 + z4a−2−4z4a4z2 + 5a2z2 + 2z2a−2−7z2a4 + 4a2 + 2a−2−4
Kauffman polynomial (db, data sources) a2z8 + z8 + 3a3z7 + 7az7 + 4z7a−1 + 3a4z6 + 8a2z6 + 5z6a−2 + 10z6 + a5z5−3a3z5−9az5−2z5a−1 + 3z5a−3−7a4z4−22a2z4−7z4a−2 + z4a−4−23z4−2a5z3−3a3z3−2z3a−1−3z3a−3 + 5a4z2 + 16a2z2 + 5z2a−2z2a−4 + 17z2 + a5z + 2a3z + az + za−1 + za−3a4−4a2−2a−2−4
The A2 invariant q16 + q12q10 + 3q8 + q6 + q2−3 + q−2−2q−4 + q−6 + 2q−8q−10 + q−12
The G2 invariant q80−2q78 + 5q76−8q74 + 7q72−5q70−5q68 + 19q66−31q64 + 39q62−34q60 + 11q58 + 19q56−55q54 + 79q52−79q50 + 49q48−2q46−48q44 + 83q42−84q40 + 60q38−9q36−36q34 + 61q32−52q30 + 14q28 + 39q26−69q24 + 75q22−40q20−15q18 + 77q16−118q14 + 120q12−84q10 + 16q8 + 55q6−109q4 + 123q2−97 + 43q−2 + 15q−4−64q−6 + 72q−8−52q−10 + 6q−12 + 39q−14−60q−16 + 48q−18−8q−20−41q−22 + 79q−24−87q−26 + 65q−28−21q−30−29q−32 + 67q−34−77q−36 + 67q−38−34q−40 + 5q−42 + 19q−44−33q−46 + 32q−48−23q−50 + 13q−52−2q−54−4q−56 + 5q−58−6q−60 + 4q−62−2q−64 + q−66

[edit] "Similar" Knots (within the Atlas)

Same Alexander/Conway Polynomial: {K11n130,}

Same Jones Polynomial (up to mirroring, q\leftrightarrow q^{-1}): {K11n114,}

[edit] Vassiliev invariants

V2 and V3: (-1, -1)

[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 = 0 is the signature of 9 30. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
-5-4-3-2-101234χ
9         11
7        2 -2
5       41 3
3      42  -2
1     54   1
-1    55    0
-3   34     -1
-5  25      3
-7 13       -2
-9 2        2
-111         -1
Integral Khovanov Homology

(db, data source)

  
\dim{\mathcal G}_{2r+i}\operatorname{KH}^r_{\mathbb Z} i = −1 i = 1
r = −5 {\mathbb Z}
r = −4 {\mathbb Z}^{2}\oplus{\mathbb Z}_2 {\mathbb Z}
r = −3 {\mathbb Z}^{3}\oplus{\mathbb Z}_2^{2} {\mathbb Z}^{2}
r = −2 {\mathbb Z}^{5}\oplus{\mathbb Z}_2^{3} {\mathbb Z}^{3}
r = −1 {\mathbb Z}^{4}\oplus{\mathbb Z}_2^{5} {\mathbb Z}^{5}
r = 0 {\mathbb Z}^{5}\oplus{\mathbb Z}_2^{4} {\mathbb Z}^{5}
r = 1 {\mathbb Z}^{4}\oplus{\mathbb Z}_2^{4} {\mathbb Z}^{4}
r = 2 {\mathbb Z}^{2}\oplus{\mathbb Z}_2^{4} {\mathbb Z}^{4}
r = 3 {\mathbb Z}\oplus{\mathbb Z}_2^{2} {\mathbb Z}^{2}
r = 4 {\mathbb Z}_2 {\mathbb Z}

[edit] The Coloured Jones Polynomials

[edit] 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.

[edit] 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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