9 7

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Image:9 7.gif
(KnotPlot image)

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[edit] Knot presentations

Planar diagram presentation X1425 X3,12,4,13 X5,16,6,17 X7,18,8,1 X17,6,18,7 X9,14,10,15 X13,10,14,11 X15,8,16,9 X11,2,12,3
Gauss code -1, 9, -2, 1, -3, 5, -4, 8, -6, 7, -9, 2, -7, 6, -8, 3, -5, 4
Dowker-Thistlethwaite code 4 12 16 18 14 2 10 8 6
Conway Notation [342]


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

Length is 11, width is 4,

Braid index is 4

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

[edit Notes on presentations of 9 7]


[edit] Three dimensional invariants

Symmetry type Reversible
Unknotting number 2
3-genus 2
Bridge index 2
Super bridge index {4,6}
Nakanishi index 1
Maximal Thurston-Bennequin number [-14][3]
Hyperbolic Volume 8.01486
A-Polynomial See Data:9 7/A-polynomial

[edit Notes for 9 7's three dimensional invariants]

[edit] Four dimensional invariants

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

[edit Notes for 9 7's four dimensional invariants]

[edit] Polynomial invariants

Alexander polynomial 3t2−7t + 9−7t−1 + 3t−2
Conway polynomial 3z4 + 5z2 + 1
2nd Alexander ideal (db, data sources) {1}
Determinant and Signature { 29, -4 }
Jones polynomial q−2q−3 + 3q−4−4q−5 + 5q−6−5q−7 + 4q−8−3q−9 + 2q−10q−11
HOMFLY-PT polynomial (db, data sources) z2a10a10 + z4a8 + 2z2a8 + a8 + z4a6 + z2a6a6 + z4a4 + 3z2a4 + 2a4
Kauffman polynomial (db, data sources) z5a13−3z3a13 + za13 + 2z6a12−6z4a12 + 3z2a12 + 2z7a11−6z5a11 + 5z3a11−2za11 + z8a10−2z6a10 + 2z4a10−2z2a10 + a10 + 3z7a9−9z5a9 + 11z3a9−3za9 + z8a8−3z6a8 + 7z4a8−4z2a8 + a8 + z7a7z5a7 + 2z3a7za7 + z6a6−2z2a6 + a6 + z5a5z3a5za5 + z4a4−3z2a4 + 2a4
The A2 invariant q34q28 + q26q18 + q16 + q12 + 2q10 + q6
The G2 invariant q176q174 + 2q172−3q170 + 2q168q166−2q164 + 7q162−8q160 + 9q158−7q156 + 6q152−12q150 + 13q148−11q146 + 4q144 + 4q142−10q140 + 10q138−6q136 + 5q132−9q130 + 5q128−7q124 + 11q122−12q120 + 8q118q116−8q114 + 13q112−16q110 + 15q108−7q106q104 + 9q102−13q100 + 14q98−7q96 + q94 + 5q92−7q90 + 5q88 + q86−6q84 + 8q82−7q80 + 4q76−9q74 + 10q72−8q70 + 4q68q66−4q64 + 6q62−6q60 + 7q58−3q56 + 3q54 + q52q50 + 4q48−3q46 + 4q44q42 + q40 + q38q36 + 2q34 + q30

[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: (5, -12)

[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 = -4 is the signature of 9 7. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
-9-8-7-6-5-4-3-2-10χ
-3         11
-5        110
-7       2  2
-9      21  -1
-11     32   1
-13    22    0
-15   23     -1
-17  12      1
-19 12       -1
-21 1        1
-231         -1
Integral Khovanov Homology

(db, data source)

  
\dim{\mathcal G}_{2r+i}\operatorname{KH}^r_{\mathbb Z} i = −5 i = −3
r = −9 {\mathbb Z}
r = −8 {\mathbb Z}\oplus{\mathbb Z}_2 {\mathbb Z}
r = −7 {\mathbb Z}^{2}\oplus{\mathbb Z}_2 {\mathbb Z}
r = −6 {\mathbb Z}^{2}\oplus{\mathbb Z}_2^{2} {\mathbb Z}^{2}
r = −5 {\mathbb Z}^{3}\oplus{\mathbb Z}_2^{2} {\mathbb Z}^{2}
r = −4 {\mathbb Z}^{2}\oplus{\mathbb Z}_2^{3} {\mathbb Z}^{3}
r = −3 {\mathbb Z}^{2}\oplus{\mathbb Z}_2^{2} {\mathbb Z}^{2}
r = −2 {\mathbb Z}\oplus{\mathbb Z}_2^{2} {\mathbb Z}^{2}
r = −1 {\mathbb Z}_2 {\mathbb Z}
r = 0 {\mathbb Z} {\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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