9 40

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9_39

9_41

Contents

Image:9 40.gif
(KnotPlot image)

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Photo d'un dossier de chaise musée Alsacien, Strasbourg France
Photo d'un dossier de chaise musée Alsacien, Strasbourg France

[edit] Knot presentations

Planar diagram presentation X1627 X7,12,8,13 X5,15,6,14 X11,3,12,2 X15,10,16,11 X3,16,4,17 X9,4,10,5 X17,9,18,8 X13,18,14,1
Gauss code -1, 4, -6, 7, -3, 1, -2, 8, -7, 5, -4, 2, -9, 3, -5, 6, -8, 9
Dowker-Thistlethwaite code 6 16 14 12 4 2 18 10 8
Conway Notation [9*]


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

Length is 9, width is 4,

Braid index is 4

Image:9 40_ML.gif Image:9 40_AP.gif
[{11, 3}, {2, 8}, {9, 4}, {3, 5}, {4, 1}, {7, 2}, {8, 6}, {10, 7}, {5, 9}, {6, 11}, {1, 10}]

[edit Notes on presentations of 9 40]


[edit] Three dimensional invariants

Symmetry type Reversible
Unknotting number 2
3-genus 3
Bridge index 3
Super bridge index 4
Nakanishi index 2
Maximal Thurston-Bennequin number [-9][-2]
Hyperbolic Volume 15.0183
A-Polynomial See Data:9 40/A-polynomial

[edit Notes for 9 40's three dimensional invariants]

[edit] Four dimensional invariants

Smooth 4 genus 1
Topological 4 genus 1
Concordance genus [1,3]
Rasmussen s-Invariant -2

[edit Notes for 9 40's four dimensional invariants]

[edit] Polynomial invariants

Alexander polynomial t3−7t2 + 18t−23 + 18t−1−7t−2 + t−3
Conway polynomial z6z4z2 + 1
2nd Alexander ideal (db, data sources) \left\{t^2-3 t+1\right\}
Determinant and Signature { 75, -2 }
Jones polynomial q2 + 5q−8 + 11q−1−13q−2 + 13q−3−11q−4 + 8q−5−4q−6 + q−7
HOMFLY-PT polynomial (db, data sources) z2a6−2z4a4−2z2a4 + a4 + z6a2 + 2z4a2−2a2z4 + 2
Kauffman polynomial (db, data sources) z4a8 + 4z5a7−2z3a7 + 8z6a6−9z4a6 + 4z2a6 + 9z7a5−12z5a5 + 6z3a5za5 + 4z8a4 + 7z6a4−20z4a4 + 7z2a4 + a4 + 17z7a3−32z5a3 + 14z3a3za3 + 4z8a2 + 4z6a2−17z4a2 + 3z2a2 + 2a2 + 8z7a−15z5a + 6z3a + 5z6−7z4 + 2 + z5a−1
The A2 invariant q22q20−2q18 + 3q16q14 + 2q12 + q10−3q8 + q6−4q4 + 3q2 + 1 + 3q−4q−6
The G2 invariant q114−3q112 + 6q110−10q108 + 10q106−8q104 + q102 + 17q100−35q98 + 57q96−69q94 + 58q92−26q90−41q88 + 121q86−182q84 + 197q82−139q80 + 14q78 + 135q76−248q74 + 274q72−196q70 + 38q68 + 122q66−223q64 + 212q62−79q60−87q58 + 218q56−237q54 + 135q52 + 47q50−232q48 + 337q46−328q44 + 209q42−7q40−197q38 + 334q36−361q34 + 269q32−104q30−93q28 + 225q26−263q24 + 194q22−39q20−123q18 + 217q16−194q14 + 58q12 + 116q10−252q8 + 282q6−192q4 + 31q2 + 141−245q−2 + 261q−4−179q−6 + 57q−8 + 53q−10−121q−12 + 126q−14−87q−16 + 44q−18−2q−20−19q−22 + 24q−24−20q−26 + 10q−28−4q−30 + q−32

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

Same Alexander/Conway Polynomial: {10_59, K11n66,}

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

[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 = -2 is the signature of 9 40. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
-6-5-4-3-2-10123χ
5         1-1
3        4 4
1       41 -3
-1      74  3
-3     75   -2
-5    66    0
-7   57     2
-9  36      -3
-11 15       4
-13 3        -3
-151         1
Integral Khovanov Homology

(db, data source)

  
\dim{\mathcal G}_{2r+i}\operatorname{KH}^r_{\mathbb Z} i = −3 i = −1
r = −6 {\mathbb Z}
r = −5 {\mathbb Z}^{3}\oplus{\mathbb Z}_2 {\mathbb Z}
r = −4 {\mathbb Z}^{5}\oplus{\mathbb Z}_2^{3} {\mathbb Z}^{3}
r = −3 {\mathbb Z}^{6}\oplus{\mathbb Z}_2^{5} {\mathbb Z}^{5}
r = −2 {\mathbb Z}^{7}\oplus{\mathbb Z}_2^{6} {\mathbb Z}^{6}
r = −1 {\mathbb Z}^{6}\oplus{\mathbb Z}_2^{7} {\mathbb Z}^{7}
r = 0 {\mathbb Z}^{5}\oplus{\mathbb Z}_2^{6} {\mathbb Z}^{7}
r = 1 {\mathbb Z}^{4}\oplus{\mathbb Z}_2^{4} {\mathbb Z}^{4}
r = 2 {\mathbb Z}\oplus{\mathbb Z}_2^{4} {\mathbb Z}^{4}
r = 3 {\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).

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9_41

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