9 48

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9_47

9_49

Contents

Image:9 48.gif
(KnotPlot image)

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[edit] Knot presentations

Planar diagram presentation X1425 X12,8,13,7 X3,11,4,10 X11,3,12,2 X14,6,15,5 X6,14,7,13 X15,18,16,1 X9,17,10,16 X17,9,18,8
Gauss code -1, 4, -3, 1, 5, -6, 2, 9, -8, 3, -4, -2, 6, -5, -7, 8, -9, 7
Dowker-Thistlethwaite code 4 10 -14 -12 16 2 -6 18 8
Conway Notation [21,21,21-]


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

Length is 11, width is 4,

Braid index is 4

Image:9 48_ML.gif Image:9 48_AP.gif
[{10, 4}, {5, 3}, {4, 7}, {2, 5}, {8, 6}, {7, 1}, {3, 8}, {9, 2}, {6, 10}, {1, 9}]

[edit Notes on presentations of 9 48]


[edit] Three dimensional invariants

Symmetry type Reversible
Unknotting number 2
3-genus 2
Bridge index 3
Super bridge index {4,6}
Nakanishi index 2
Maximal Thurston-Bennequin number [-1][-8]
Hyperbolic Volume 9.53188
A-Polynomial See Data:9 48/A-polynomial

[edit Notes for 9 48's three dimensional invariants]

[edit] Four dimensional invariants

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

[edit Notes for 9 48's four dimensional invariants]

[edit] Polynomial invariants

Alexander polynomial t2 + 7t−11 + 7t−1t−2
Conway polynomial z4 + 3z2 + 1
2nd Alexander ideal (db, data sources) {3,t + 1}
Determinant and Signature { 27, 2 }
Jones polynomial −2q6 + 3q5−4q4 + 6q3−4q2 + 4q−3 + q−1
HOMFLY-PT polynomial (db, data sources) z4a−2z2a−2 + 3z2a−4 + z2 + 3a−4−2a−6
Kauffman polynomial (db, data sources) z7a−3 + z7a−5 + 3z6a−2 + 4z6a−4 + z6a−6 + 3z5a−1 + 2z5a−3z5a−5−5z4a−2−6z4a−4 + z4−5z3a−1−3z3a−3 + 5z3a−5 + 3z3a−7 + 2z2a−2 + 2z2a−4z2a−6z2za−3−5za−5−4za−7 + 3a−4 + 2a−6
The A2 invariant q4q2−1 + q−2q−4 + 2q−6 + q−8 + 2q−10 + 2q−12 + q−16−2q−18−2q−20
The G2 invariant q18−2q16 + 4q14−6q12 + 3q10 + q8−6q6 + 14q4−14q2 + 15−8q−2−7q−4 + 16q−6−23q−8 + 18q−10−9q−12−5q−14 + 13q−16−13q−18 + 10q−20 + q−22−13q−24 + 16q−26−13q−28 + q−30 + 15q−32−24q−34 + 27q−36−14q−38 + 11q−40 + 7q−42−22q−44 + 29q−46−22q−48 + 19q−50−2q−52−14q−54 + 21q−56−8q−58 + 6q−60 + q−62−15q−64 + 14q−66−5q−68−8q−70 + 14q−72−24q−74 + 21q−76−5q−78−10q−80 + 11q−82−18q−84 + 16q−86−9q−88−2q−90 + 3q−92−7q−94 + 7q−96−2q−98 + q−100 + q−102

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

Same Alexander/Conway Polynomial: {K11n1,}

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

[edit] Vassiliev invariants

V2 and V3: (3, 5)

[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 48. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
-2-1012345χ
13       2-2
11      1 1
9     32 -1
7    31  2
5   13   2
3  33    0
1 12     1
-1 2      -2
-31       1
Integral Khovanov Homology

(db, data source)

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

[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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