9 19

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Contents

Image:9 19.gif
(KnotPlot image)

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Visit 9_19's page at Knotilus!

Visit 9 19's page at the original Knot Atlas!


[edit] Knot presentations

Planar diagram presentation X1425 X5,10,6,11 X3948 X9,3,10,2 X13,16,14,17 X7,15,8,14 X15,7,16,6 X11,18,12,1 X17,12,18,13
Gauss code -1, 4, -3, 1, -2, 7, -6, 3, -4, 2, -8, 9, -5, 6, -7, 5, -9, 8
Dowker-Thistlethwaite code 4 8 10 14 2 18 16 6 12
Conway Notation [23112]


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

Length is 10, width is 5,

Braid index is 5

Image:9 19_ML.gif Image:9 19_AP.gif
[{11, 5}, {4, 9}, {10, 6}, {5, 7}, {9, 11}, {6, 3}, {2, 4}, {3, 1}, {8, 2}, {7, 10}, {1, 8}]

[edit Notes on presentations of 9 19]


[edit] Three dimensional invariants

Symmetry type Reversible
Unknotting number 1
3-genus 2
Bridge index 2
Super bridge index {4,6}
Nakanishi index 1
Maximal Thurston-Bennequin number [-6][-5]
Hyperbolic Volume 10.0325
A-Polynomial See Data:9 19/A-polynomial

[edit Notes for 9 19's three dimensional invariants]

[edit] Four dimensional invariants

Smooth 4 genus 1
Topological 4 genus 1
Concordance genus 2
Rasmussen s-Invariant 0

[edit Notes for 9 19's four dimensional invariants]

[edit] Polynomial invariants

Alexander polynomial 2t2−10t + 17−10t−1 + 2t−2
Conway polynomial 2z4−2z2 + 1
2nd Alexander ideal (db, data sources) {1}
Determinant and Signature { 41, 0 }
Jones polynomial q4−2q3 + 4q2−6q + 7−7q−1 + 6q−2−4q−3 + 3q−4q−5
HOMFLY-PT polynomial (db, data sources) z2a4 + z4a2 + z2a2 + a2 + z4−2z2a−2a−2 + a−4
Kauffman polynomial (db, data sources) a2z8 + z8 + 3a3z7 + 5az7 + 2z7a−1 + 3a4z6 + 3a2z6 + 2z6a−2 + 2z6 + a5z5−7a3z5−11az5z5a−1 + 2z5a−3−8a4z4−11a2z4 + z4a−4−4z4−2a5z3 + 4a3z3 + 10az3 + z3a−1−3z3a−3 + 4a4z2 + 8a2z2−3z2a−2−2z2a−4 + 3z2a3z−3azza−1 + za−3a2 + a−2 + a−4
The A2 invariant q16 + q14 + q12q10 + 2q8 + q2−1 + q−2−2q−4 + q−8q−10 + q−12 + q−14
The G2 invariant q80−2q78 + 4q76−7q74 + 5q72−3q70−5q68 + 16q66−21q64 + 24q62−18q60 + 2q58 + 18q56−34q54 + 40q52−31q50 + 13q48 + 11q46−28q44 + 33q42−24q40 + 8q38 + 10q36−23q34 + 20q32−6q30−13q28 + 30q26−34q24 + 27q22−6q20−20q18 + 41q16−51q14 + 48q12−25q10−3q8 + 30q6−44q4 + 44q2−27 + 4q−2 + 14q−4−24q−6 + 19q−8−4q−10−13q−12 + 23q−14−22q−16 + 7q−18 + 9q−20−26q−22 + 33q−24−29q−26 + 17q−28−2q−30−14q−32 + 22q−34−24q−36 + 21q−38−12q−40 + 4q−42 + 4q−44−9q−46 + 11q−48−9q−50 + 8q−52−3q−54 + 2q−58−3q−60 + 3q−62q−64 + q−66

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

Same Alexander/Conway Polynomial: {}

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

[edit] Vassiliev invariants

V2 and V3: (-2, -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 19. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
-5-4-3-2-101234χ
9         11
7        1 -1
5       31 2
3      31  -2
1     43   1
-1    44    0
-3   23     -1
-5  24      2
-7 12       -1
-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}^{2}\oplus{\mathbb Z}_2^{2} {\mathbb Z}^{2}
r = −2 {\mathbb Z}^{4}\oplus{\mathbb Z}_2^{2} {\mathbb Z}^{2}
r = −1 {\mathbb Z}^{3}\oplus{\mathbb Z}_2^{4} {\mathbb Z}^{4}
r = 0 {\mathbb Z}^{4}\oplus{\mathbb Z}_2^{3} {\mathbb Z}^{4}
r = 1 {\mathbb Z}^{3}\oplus{\mathbb Z}_2^{3} {\mathbb Z}^{3}
r = 2 {\mathbb Z}\oplus{\mathbb Z}_2^{3} {\mathbb Z}^{3}
r = 3 {\mathbb Z}\oplus{\mathbb Z}_2 {\mathbb Z}
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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