5 2

From Knot Atlas

Jump to: navigation, search


5_1

6_1

Contents

Image:5 2.gif
(KnotPlot image)

See the full Rolfsen Knot Table.

Visit 5 2's page at the Knot Server (KnotPlot driven, includes 3D interactive images!)

Visit 5_2's page at Knotilus!

Visit 5 2's page at the original Knot Atlas!

5_2 is also known as the 3-twist knot.


[edit] Knot presentations

Planar diagram presentation X1425 X3849 X5,10,6,1 X9,6,10,7 X7283
Gauss code -1, 5, -2, 1, -3, 4, -5, 2, -4, 3
Dowker-Thistlethwaite code 4 8 10 2 6
Conway Notation [32]


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

Length is 6, width is 3,

Braid index is 3

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

[edit Notes on presentations of 5 2]

Knot 5_2.
Knot 5_2.
A graph, knot 5_2.
A graph, knot 5_2.

[edit] Three dimensional invariants

Symmetry type Reversible
Unknotting number 1
3-genus 1
Bridge index 2
Super bridge index {3,4}
Nakanishi index 1
Maximal Thurston-Bennequin number [-8][1]
Hyperbolic Volume 2.82812
A-Polynomial See Data:5 2/A-polynomial

[edit Notes for 5 2'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 5 2's four dimensional invariants]

[edit] Polynomial invariants

Alexander polynomial 2t−3 + 2t−1
Conway polynomial 2z2 + 1
2nd Alexander ideal (db, data sources) {1}
Determinant and Signature { 7, -2 }
Jones polynomial q−1q−2 + 2q−3q−4 + q−5q−6
HOMFLY-PT polynomial (db, data sources) a6 + z2a4 + a4 + z2a2 + a2
Kauffman polynomial (db, data sources) z3a7−2za7 + z4a6−2z2a6 + a6 + 2z3a5−2za5 + z4a4z2a4 + a4 + z3a3 + z2a2a2
The A2 invariant q20q18 + q12 + q10 + q8 + q6 + q2
The G2 invariant q100 + q96q94q92 + q90q88q84q82q78q76q74q72q68q66 + q64 + q60 + q56 + q54 + 2q50q48 + 2q46 + q44 + q40 + q34 + 2q24 + q20 + q14 + q10

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

Same Alexander/Conway Polynomial: {}

Same Jones Polynomial (up to mirroring, q\leftrightarrow q^{-1}): {K11n57,}

[edit] Vassiliev invariants

V2 and V3: (2, -3)

[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 5 2. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
-5-4-3-2-10χ
-1     11
-3    110
-5   1  1
-7   1  1
-9 11   0
-11      0
-131     -1
Integral Khovanov Homology

(db, data source)

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

Back to the top.

5_1

6_1

Personal tools