8 11

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Image:8 11.gif
(KnotPlot image)

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Visit 8 11's page at the original Knot Atlas!


[edit] Knot presentations

Planar diagram presentation X1425 X5,12,6,13 X3,11,4,10 X11,3,12,2 X9,16,10,1 X15,6,16,7 X7,14,8,15 X13,8,14,9
Gauss code -1, 4, -3, 1, -2, 6, -7, 8, -5, 3, -4, 2, -8, 7, -6, 5
Dowker-Thistlethwaite code 4 10 12 14 16 2 8 6
Conway Notation [3212]


Minimum Braid Representative A Morse Link Presentation An Arc Presentation
Image:BraidPart3.gifImage:BraidPart3.gifImage:BraidPart0.gifImage:BraidPart1.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gif
Image:BraidPart4.gifImage:BraidPart4.gifImage:BraidPart3.gifImage:BraidPart2.gifImage:BraidPart3.gifImage:BraidPart3.gifImage:BraidPart0.gifImage:BraidPart3.gifImage:BraidPart0.gif
Image:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart4.gifImage:BraidPart0.gifImage:BraidPart4.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:8 11_ML.gif Image:8 11_AP.gif
[{10, 5}, {1, 8}, {9, 6}, {5, 7}, {8, 10}, {4, 9}, {6, 3}, {2, 4}, {3, 1}, {7, 2}]

[edit Notes on presentations of 8 11]

Knot 8_11.
Knot 8_11.
A graph, knot 8_11.
A graph, knot 8_11.

[edit] Three dimensional invariants

Symmetry type Reversible
Unknotting number 1
3-genus 2
Bridge index 2
Super bridge index {4,5}
Nakanishi index 1
Maximal Thurston-Bennequin number [-9][-1]
Hyperbolic Volume 8.28632
A-Polynomial See Data:8 11/A-polynomial

[edit Notes for 8 11's three dimensional invariants]

[edit] Four dimensional invariants

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

[edit Notes for 8 11's four dimensional invariants]

[edit] Polynomial invariants

Alexander polynomial −2t2 + 7t−9 + 7t−1−2t−2
Conway polynomial −2z4z2 + 1
2nd Alexander ideal (db, data sources) {1}
Determinant and Signature { 27, -2 }
Jones polynomial q−2 + 4q−1−4q−2 + 5q−3−5q−4 + 3q−5−2q−6 + q−7
HOMFLY-PT polynomial (db, data sources) z2a6 + a6z4a4−2z2a4−2a4z4a2z2a2 + a2 + z2 + 1
Kauffman polynomial (db, data sources) z4a8−2z2a8 + 2z5a7−4z3a7 + 2za7 + 2z6a6−3z4a6 + 2z2a6a6 + z7a5 + z5a5−3z3a5 + 3za5 + 4z6a4−7z4a4 + 6z2a4−2a4 + z7a3 + z5a3−2z3a3 + za3 + 2z6a2−2z4a2a2 + 2z5a−3z3a + z4−2z2 + 1
The A2 invariant q22 + q16−2q14q12q10 + 2q6 + 2q2 + q−4
The G2 invariant q114q112 + 2q110−3q108 + q106q104−3q102 + 7q100−8q98 + 8q96−6q94 + 2q92 + 7q90−13q88 + 16q86−13q84 + 7q82 + 3q80−10q78 + 13q76−9q74 + 8q72 + 4q70−10q68 + 7q66−2q64−8q62 + 14q60−18q58 + 10q56−3q54−9q52 + 18q50−25q48 + 19q46−14q44q42 + 11q40−17q38 + 16q36−9q34 + 4q32 + 6q30−9q28 + 7q26−7q22 + 14q20−11q18 + 5q16 + 6q14−11q12 + 17q10−14q8 + 9q6−2q4−7q2 + 10−9q−2 + 8q−4−3q−6 + q−8 + 2q−10−3q−12 + 3q−14q−16 + q−18

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

Same Alexander/Conway Polynomial: {10_147, K11n122,}

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

[edit] Vassiliev invariants

V2 and V3: (-1, 2)

[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 8 11. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
-6-5-4-3-2-1012χ
3        11
1       1 -1
-1      31 2
-3     22  0
-5    32   1
-7   22    0
-9  13     -2
-11 12      1
-13 1       -1
-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}\oplus{\mathbb Z}_2 {\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}^{2}\oplus{\mathbb Z}_2^{3} {\mathbb Z}^{3}
r = −1 {\mathbb Z}^{2}\oplus{\mathbb Z}_2^{2} {\mathbb Z}^{2}
r = 0 {\mathbb Z}^{2}\oplus{\mathbb Z}_2^{2} {\mathbb Z}^{3}
r = 1 {\mathbb Z}\oplus{\mathbb Z}_2 {\mathbb Z}
r = 2 {\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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