9 26

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Image:9 26.gif
(KnotPlot image)

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[edit] Knot presentations

Planar diagram presentation X1425 X5,12,6,13 X3,11,4,10 X11,3,12,2 X13,18,14,1 X7,15,8,14 X17,7,18,6 X9,17,10,16 X15,9,16,8
Gauss code -1, 4, -3, 1, -2, 7, -6, 9, -8, 3, -4, 2, -5, 6, -9, 8, -7, 5
Dowker-Thistlethwaite code 4 10 12 14 16 2 18 8 6
Conway Notation [311112]


Minimum Braid Representative A Morse Link Presentation An Arc Presentation
Image:BraidPart1.gifImage:BraidPart1.gifImage:BraidPart1.gifImage:BraidPart0.gifImage:BraidPart1.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gif
Image:BraidPart2.gifImage:BraidPart2.gifImage:BraidPart2.gifImage:BraidPart3.gifImage:BraidPart2.gifImage:BraidPart3.gifImage:BraidPart0.gifImage:BraidPart3.gifImage:BraidPart0.gif
Image:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart4.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 9, width is 4,

Braid index is 4

Image:9 26_ML.gif Image:9 26_AP.gif
[{11, 4}, {3, 9}, {10, 5}, {4, 6}, {9, 11}, {5, 2}, {8, 3}, {6, 1}, {7, 10}, {2, 8}, {1, 7}]

[edit Notes on presentations of 9 26]


[edit] Three dimensional invariants

Symmetry type Reversible
Unknotting number 1
3-genus 3
Bridge index 2
Super bridge index {4,6}
Nakanishi index 1
Maximal Thurston-Bennequin number [-2][-9]
Hyperbolic Volume 10.5958
A-Polynomial See Data:9 26/A-polynomial

[edit Notes for 9 26's three dimensional invariants]

[edit] Four dimensional invariants

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

[edit Notes for 9 26's four dimensional invariants]

[edit] Polynomial invariants

Alexander polynomial t3−5t2 + 11t−13 + 11t−1−5t−2 + t−3
Conway polynomial z6 + z4 + 1
2nd Alexander ideal (db, data sources) {1}
Determinant and Signature { 47, 2 }
Jones polynomial q7−3q6 + 5q5−7q4 + 8q3−8q2 + 7q−4 + 3q−1q−2
HOMFLY-PT polynomial (db, data sources) z6a−2 + 4z4a−2−2z4a−4z4 + 6z2a−2−5z2a−4 + z2a−6−2z2 + 3a−2−3a−4 + a−6
Kauffman polynomial (db, data sources) z8a−2 + z8a−4 + 3z7a−1 + 6z7a−3 + 3z7a−5 + 5z6a−2 + 6z6a−4 + 4z6a−6 + 3z6 + az5−6z5a−1−11z5a−3z5a−5 + 3z5a−7−16z4a−2−14z4a−4−5z4a−6 + z4a−8−8z4−2az3 + 3z3a−1 + 7z3a−3−2z3a−5−4z3a−7 + 13z2a−2 + 11z2a−4 + 2z2a−6z2a−8 + 5z2za−1za−3 + za−5 + za−7−3a−2−3a−4a−6
The A2 invariant q6 + q4 + 1 + 3q−2q−4 + 2q−6q−8−2q−14 + q−16q−18 + q−22
The G2 invariant q32−2q30 + 4q28−7q26 + 5q24−4q22−4q20 + 16q18−23q16 + 28q14−23q12 + 8q10 + 15q8−39q6 + 53q4−49q2 + 30 + 2q−2−31q−4 + 51q−6−49q−8 + 35q−10−5q−12−23q−14 + 35q−16−28q−18 + 6q−20 + 25q−22−40q−24 + 44q−26−23q−28−10q−30 + 46q−32−73q−34 + 76q−36−53q−38 + 12q−40 + 33q−42−67q−44 + 78q−46−62q−48 + 28q−50 + 5q−52−38q−54 + 44q−56−31q−58 + 4q−60 + 21q−62−33q−64 + 26q−66−4q−68−25q−70 + 44q−72−50q−74 + 40q−76−15q−78−15q−80 + 38q−82−46q−84 + 44q−86−27q−88 + 9q−90 + 8q−92−21q−94 + 24q−96−19q−98 + 13q−100−4q−102−2q−104 + 4q−106−6q−108 + 4q−110−2q−112 + q−114

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

Same Alexander/Conway Polynomial: {K11n25,}

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

[edit] Vassiliev invariants

V2 and V3: (0, -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 26. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
-3-2-10123456χ
15         11
13        2 -2
11       31 2
9      42  -2
7     43   1
5    44    0
3   34     -1
1  25      3
-1 12       -1
-3 2        2
-51         -1
Integral Khovanov Homology

(db, data source)

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