7 3

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7_2

7_4

Contents

Image:7 3.gif
(KnotPlot image)

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Visit 7 3's page at the original Knot Atlas!


[edit] Knot presentations

Planar diagram presentation X6271 X10,4,11,3 X14,8,1,7 X8,14,9,13 X12,6,13,5 X2,10,3,9 X4,12,5,11
Gauss code 1, -6, 2, -7, 5, -1, 3, -4, 6, -2, 7, -5, 4, -3
Dowker-Thistlethwaite code 6 10 12 14 2 4 8
Conway Notation [43]


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

Length is 8, width is 3,

Braid index is 3

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

[edit Notes on presentations of 7 3]

Knot 7_3.
Knot 7_3.
A graph, knot 7_3.
A graph, knot 7_3.

[edit] Three dimensional invariants

Symmetry type Reversible
Unknotting number 2
3-genus 2
Bridge index 2
Super bridge index {3,4}
Nakanishi index 1
Maximal Thurston-Bennequin number [3][-12]
Hyperbolic Volume 4.59213
A-Polynomial See Data:7 3/A-polynomial

[edit Notes for 7 3'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 7 3's four dimensional invariants]

[edit] Polynomial invariants

Alexander polynomial 2t2−3t + 3−3t−1 + 2t−2
Conway polynomial 2z4 + 5z2 + 1
2nd Alexander ideal (db, data sources) {1}
Determinant and Signature { 13, 4 }
Jones polynomial q9 + q8−2q7 + 3q6−2q5 + 2q4q3 + q2
HOMFLY-PT polynomial (db, data sources) z4a−4 + z4a−6 + 3z2a−4 + 3z2a−6z2a−8 + a−4 + 2a−6−2a−8
Kauffman polynomial (db, data sources) z6a−6 + z6a−8 + z5a−5 + 2z5a−7 + z5a−9 + z4a−4−3z4a−6−3z4a−8 + z4a−10−2z3a−5−4z3a−7z3a−9 + z3a−11−3z2a−4 + 4z2a−6 + 6z2a−8z2a−10 + 3za−7 + za−9−2za−11 + a−4−2a−6−2a−8
The A2 invariant q−6 + q−10 + q−14 + 2q−16 + q−18 + q−20q−22q−24q−26q−28
The G2 invariant q−30 + q−34q−36 + q−38 + q−40q−42 + 3q−44q−46 + 2q−48q−52 + 2q−54−2q−56 + 2q−58q−62 + 2q−64 + q−68 + 2q−70q−72 + 2q−74 + 3q−80−2q−82 + 3q−84 + 2q−88 + q−90−3q−92 + 3q−94−3q−96 + 2q−98q−100−3q−102 + q−104q−106q−108−3q−112q−114q−116−2q−118 + 2q−120−3q−122 + q−124q−128 + q−130q−132 + q−134q−136 + q−138q−142 + q−144 + q−148

[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, 11)

[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 7 3. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
01234567χ
19       1-1
17        0
15     21 -1
13    1   1
11   12   1
9  11    0
7  1     1
511      0
31       1
Integral Khovanov Homology

(db, data source)

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