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{{Rolfsen Knot Page|
n = 5 |
k = 1 |
same_alexander = <nowiki>[[10_132]], </nowiki> |
same_jones = <nowiki>[[10_132]], </nowiki> |
coloured_jones_2 = <math> q^{-19} - q^{-18} + q^{-16} -2 q^{-15} + q^{-13} - q^{-12} + q^{-10} - q^{-9} + q^{-7} + q^{-4} </math> |
coloured_jones_3 = <math>- q^{-36} + q^{-35} + q^{-31} - q^{-29} + q^{-27} - q^{-25} - q^{-21} + q^{-18} - q^{-17} + q^{-14} - q^{-13} + q^{-10} + q^{-6} </math> |
coloured_jones_4 = <math> q^{-58} - q^{-57} - q^{-54} + q^{-53} - q^{-52} + q^{-51} - q^{-49} + q^{-48} - q^{-47} + q^{-46} + q^{-45} - q^{-44} + q^{-43} - q^{-42} + q^{-41} - q^{-39} + q^{-38} - q^{-37} + q^{-36} - q^{-34} + q^{-33} - q^{-32} - q^{-29} + q^{-28} - q^{-27} + q^{-23} - q^{-22} + q^{-18} - q^{-17} + q^{-13} + q^{-8} </math> |
coloured_jones_5 = <math>- q^{-85} + q^{-84} + q^{-81} - q^{-79} + q^{-75} - q^{-73} - q^{-72} + q^{-69} - q^{-66} + q^{-63} - q^{-60} + q^{-58} + q^{-57} - q^{-54} + q^{-52} - q^{-48} + q^{-46} - q^{-42} + q^{-40} - q^{-39} - q^{-36} + q^{-34} - q^{-33} + q^{-28} - q^{-27} + q^{-22} - q^{-21} + q^{-16} + q^{-10} </math> |
coloured_jones_6 = <math> q^{-117} - q^{-116} - q^{-113} +2 q^{-110} - q^{-109} - q^{-106} + q^{-104} +2 q^{-103} - q^{-102} -2 q^{-99} + q^{-97} +2 q^{-96} - q^{-95} -2 q^{-92} +2 q^{-89} - q^{-88} -2 q^{-85} + q^{-83} +2 q^{-82} - q^{-81} -2 q^{-78} + q^{-76} +2 q^{-75} - q^{-74} - q^{-71} + q^{-69} +2 q^{-68} - q^{-67} - q^{-64} +2 q^{-61} - q^{-60} - q^{-57} +2 q^{-54} - q^{-53} - q^{-50} + q^{-47} - q^{-46} - q^{-43} + q^{-40} - q^{-39} + q^{-33} - q^{-32} + q^{-26} - q^{-25} + q^{-19} + q^{-12} </math> |
coloured_jones_7 = <math>- q^{-154} + q^{-153} + q^{-150} - q^{-147} - q^{-146} + q^{-145} + q^{-142} - q^{-141} - q^{-139} - q^{-138} + q^{-137} + q^{-136} + q^{-134} - q^{-133} - q^{-131} - q^{-130} + q^{-129} + q^{-128} + q^{-127} + q^{-126} - q^{-125} - q^{-123} - q^{-122} + q^{-121} + q^{-119} + q^{-118} - q^{-117} - q^{-115} - q^{-114} + q^{-113} + q^{-111} + q^{-110} - q^{-109} - q^{-108} - q^{-107} - q^{-106} + q^{-105} + q^{-103} + q^{-102} - q^{-101} - q^{-100} - q^{-98} + q^{-97} + q^{-95} + q^{-94} - q^{-93} - q^{-92} - q^{-90} + q^{-89} + q^{-87} + q^{-86} - q^{-85} - q^{-82} + q^{-81} + q^{-79} + q^{-78} - q^{-77} - q^{-74} + q^{-71} + q^{-70} - q^{-69} - q^{-66} + q^{-63} + q^{-62} - q^{-61} - q^{-58} + q^{-54} - q^{-53} - q^{-50} + q^{-46} - q^{-45} + q^{-38} - q^{-37} + q^{-30} - q^{-29} + q^{-22} + q^{-14} </math>
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Latest revision as of 05:10, 3 March 2013

4 1.gif

4_1

5 2.gif

5_2

5 1.gif
(KnotPlot image)

See the full Rolfsen Knot Table.

Visit 5 1's page at the Knot Server (KnotPlot driven, includes 3D interactive images!)

Visit 5 1 at Knotilus!

An interlaced pentagram, this is known variously as the "Cinquefoil Knot", after certain herbs and shrubs of the rose family which have 5-lobed leaves and 5-petaled flowers (see e.g. [4]), as the "Pentafoil Knot" (visit Bert Jagers' pentafoil page), as the "Double Overhand Knot", as 5_1, or finally as the torus knot T(5,2).

When taken off the post the strangle knot (hitch) of practical knot tying deforms to 5_1


A kolam of a 2x3 dot array
The VISA Interlink Logo [1]
Version of the US bicentennial emblem
A pentagonal table by Bob Mackay [2]
The Utah State Parks logo
As impossible object ("Penrose" pentagram)
Folded ribbon which is single-sided (more complex version of Möbius Strip).
Non-pentagonal shape.
Pentagram of circles.
Alternate pentagram of intersecting circles.
3D-looking rendition.
Partial view of US bicentennial logo on a shirt seen in Lisboa [3]
Non-prime knot with two 5_1 configurations on a closed loop.
Knotted epitrochoid
Sum of two 5_1s, Vienna, orthodox church

This sentence was last edited by Dror. Sometime later, Scott added this sentence.

Knot presentations

Planar diagram presentation X1627 X3849 X5,10,6,1 X7283 X9,4,10,5
Gauss code -1, 4, -2, 5, -3, 1, -4, 2, -5, 3
Dowker-Thistlethwaite code 6 8 10 2 4
Conway Notation [5]


Minimum Braid Representative A Morse Link Presentation An Arc Presentation
BraidPart3.gifBraidPart3.gifBraidPart3.gifBraidPart3.gifBraidPart3.gif
BraidPart4.gifBraidPart4.gifBraidPart4.gifBraidPart4.gifBraidPart4.gif

Length is 5, width is 2,

Braid index is 2

5 1 ML.gif 5 1 AP.gif
[{7, 2}, {1, 3}, {2, 4}, {3, 5}, {4, 6}, {5, 7}, {6, 1}]

[edit Notes on presentations of 5 1]

Knot 5_1.
A graph, knot 5_1.

Three dimensional invariants

Symmetry type Reversible
Unknotting number 2
3-genus 2
Bridge index 2
Super bridge index 3
Nakanishi index 1
Maximal Thurston-Bennequin number [-10][3]
Hyperbolic Volume Not hyperbolic
A-Polynomial See Data:5 1/A-polynomial

[edit Notes for 5 1's three dimensional invariants]

Four dimensional invariants

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

[edit Notes for 5 1's four dimensional invariants]

Polynomial invariants

Alexander polynomial
Conway polynomial
2nd Alexander ideal (db, data sources)
Determinant and Signature { 5, -4 }
Jones polynomial
HOMFLY-PT polynomial (db, data sources)
Kauffman polynomial (db, data sources)
The A2 invariant
The G2 invariant

"Similar" Knots (within the Atlas)

Same Alexander/Conway Polynomial: {[[10_132]], }

Same Jones Polynomial (up to mirroring, ): {[[10_132]], }

Vassiliev invariants

V2 and V3: (3, -5)
V2,1 through V6,9:
V2,1 V3,1 V4,1 V4,2 V4,3 V5,1 V5,2 V5,3 V5,4 V6,1 V6,2 V6,3 V6,4 V6,5 V6,6 V6,7 V6,8 V6,9

V2,1 through V6,9 were provided by Petr Dunin-Barkowski <barkovs@itep.ru>, Andrey Smirnov <asmirnov@itep.ru>, and Alexei Sleptsov <sleptsov@itep.ru> and uploaded on October 2010 by User:Drorbn. Note that they are normalized differently than V2 and V3.

Khovanov Homology

The coefficients of the monomials are shown, along with their alternating sums (fixed , alternation over ). The squares with yellow highlighting are those on the "critical diagonals", where or , where -4 is the signature of 5 1. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
-5-4-3-2-10χ
-3     11
-5     11
-7   1  1
-9      0
-11 11   0
-13      0
-151     -1
Integral Khovanov Homology

(db, data source)

  

The Coloured Jones Polynomials