6 1: Difference between revisions

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<tr align=center><td>-9</td><td bgcolor=yellow>1</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>1</td></tr>
<tr align=center><td>-9</td><td bgcolor=yellow>1</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td><td>1</td></tr>
</table>}}
</table>}}

{{Display Coloured Jones|J2=<math>q^6-q^5+2 q^3-3 q^2+4-4 q^{-1} +4 q^{-3} -3 q^{-4} +3 q^{-6} -2 q^{-7} - q^{-8} +2 q^{-9} - q^{-10} - q^{-11} + q^{-12} </math>|J3=<math>q^{12}-q^{11}+q^8-2 q^7+2 q^5+q^4-4 q^3+4 q+2-5 q^{-1} - q^{-2} +5 q^{-3} + q^{-4} -4 q^{-5} -2 q^{-6} +4 q^{-7} + q^{-8} -3 q^{-9} -2 q^{-10} +3 q^{-11} +2 q^{-12} -2 q^{-13} -2 q^{-14} + q^{-15} +3 q^{-16} - q^{-17} -2 q^{-18} +2 q^{-20} - q^{-22} - q^{-23} + q^{-24} </math>|J4=<math>q^{20}-q^{19}-q^{16}+2 q^{15}-2 q^{14}+q^{13}+q^{12}-2 q^{11}+2 q^{10}-4 q^9+3 q^8+4 q^7-3 q^6+q^5-7 q^4+4 q^3+6 q^2-3 q+2-10 q^{-1} +4 q^{-2} +7 q^{-3} -3 q^{-4} +2 q^{-5} -10 q^{-6} +4 q^{-7} +6 q^{-8} -3 q^{-9} +3 q^{-10} -8 q^{-11} +3 q^{-12} +5 q^{-13} -2 q^{-14} +3 q^{-15} -7 q^{-16} + q^{-17} +3 q^{-18} - q^{-19} +4 q^{-20} -6 q^{-21} + q^{-23} +5 q^{-25} -4 q^{-26} - q^{-27} - q^{-28} +5 q^{-30} -2 q^{-31} - q^{-32} - q^{-33} - q^{-34} +3 q^{-35} - q^{-38} - q^{-39} + q^{-40} </math>|J5=<math>q^{30}-q^{29}-q^{26}+2 q^{24}-q^{23}+q^{21}-2 q^{20}-q^{19}+2 q^{18}+2 q^{16}+2 q^{15}-3 q^{14}-4 q^{13}-q^{12}+2 q^{11}+5 q^{10}+5 q^9-4 q^8-7 q^7-4 q^6+q^5+8 q^4+7 q^3-3 q^2-8 q-5+8 q^{-2} +8 q^{-3} - q^{-4} -8 q^{-5} -7 q^{-6} + q^{-7} +8 q^{-8} +6 q^{-9} -8 q^{-11} -6 q^{-12} +2 q^{-13} +7 q^{-14} +4 q^{-15} -7 q^{-17} -5 q^{-18} + q^{-19} +5 q^{-20} +3 q^{-21} + q^{-22} -4 q^{-23} -4 q^{-24} +3 q^{-26} +3 q^{-27} + q^{-28} - q^{-29} -2 q^{-30} -2 q^{-31} +2 q^{-33} + q^{-34} + q^{-35} -2 q^{-37} -2 q^{-38} +3 q^{-41} +2 q^{-42} - q^{-43} -2 q^{-44} -2 q^{-45} - q^{-46} +2 q^{-47} +3 q^{-48} - q^{-50} - q^{-51} -2 q^{-52} +2 q^{-54} + q^{-55} - q^{-58} - q^{-59} + q^{-60} </math>|J6=<math>q^{42}-q^{41}-q^{38}+3 q^{35}-2 q^{34}+q^{32}-2 q^{31}-q^{30}+5 q^{28}-2 q^{27}+q^{26}+2 q^{25}-5 q^{24}-4 q^{23}-q^{22}+8 q^{21}+4 q^{19}+4 q^{18}-10 q^{17}-9 q^{16}-5 q^{15}+11 q^{14}+4 q^{13}+9 q^{12}+8 q^{11}-14 q^{10}-14 q^9-9 q^8+12 q^7+5 q^6+13 q^5+12 q^4-15 q^3-16 q^2-12 q+13+3 q^{-1} +14 q^{-2} +15 q^{-3} -15 q^{-4} -16 q^{-5} -13 q^{-6} +12 q^{-7} +2 q^{-8} +14 q^{-9} +15 q^{-10} -15 q^{-11} -16 q^{-12} -12 q^{-13} +13 q^{-14} +2 q^{-15} +13 q^{-16} +13 q^{-17} -14 q^{-18} -15 q^{-19} -11 q^{-20} +13 q^{-21} +2 q^{-22} +11 q^{-23} +11 q^{-24} -11 q^{-25} -12 q^{-26} -10 q^{-27} +11 q^{-28} +9 q^{-30} +10 q^{-31} -8 q^{-32} -9 q^{-33} -9 q^{-34} +8 q^{-35} -3 q^{-36} +7 q^{-37} +9 q^{-38} -4 q^{-39} -6 q^{-40} -7 q^{-41} +6 q^{-42} -6 q^{-43} +5 q^{-44} +7 q^{-45} - q^{-46} -2 q^{-47} -4 q^{-48} +5 q^{-49} -8 q^{-50} +2 q^{-51} +4 q^{-52} - q^{-55} +6 q^{-56} -7 q^{-57} - q^{-58} + q^{-62} +7 q^{-63} -4 q^{-64} - q^{-65} -2 q^{-66} - q^{-67} - q^{-68} +6 q^{-70} - q^{-71} - q^{-73} - q^{-74} -2 q^{-75} - q^{-76} +3 q^{-77} + q^{-79} - q^{-82} - q^{-83} + q^{-84} </math>|J7=<math>q^{56}-q^{55}-q^{52}+q^{49}+2 q^{48}-2 q^{47}+q^{45}-2 q^{44}-q^{42}+2 q^{41}+4 q^{40}-3 q^{39}+q^{37}-4 q^{36}-q^{35}-2 q^{34}+4 q^{33}+7 q^{32}-q^{31}-2 q^{29}-9 q^{28}-3 q^{27}-3 q^{26}+6 q^{25}+15 q^{24}+4 q^{23}+3 q^{22}-7 q^{21}-17 q^{20}-9 q^{19}-7 q^{18}+10 q^{17}+23 q^{16}+11 q^{15}+8 q^{14}-8 q^{13}-25 q^{12}-16 q^{11}-11 q^{10}+10 q^9+28 q^8+14 q^7+14 q^6-7 q^5-28 q^4-19 q^3-15 q^2+8 q+30+15 q^{-1} +16 q^{-2} -5 q^{-3} -28 q^{-4} -18 q^{-5} -17 q^{-6} +6 q^{-7} +29 q^{-8} +16 q^{-9} +17 q^{-10} -6 q^{-11} -28 q^{-12} -16 q^{-13} -16 q^{-14} +5 q^{-15} +29 q^{-16} +17 q^{-17} +15 q^{-18} -7 q^{-19} -28 q^{-20} -14 q^{-21} -15 q^{-22} +5 q^{-23} +28 q^{-24} +16 q^{-25} +13 q^{-26} -7 q^{-27} -26 q^{-28} -12 q^{-29} -14 q^{-30} +4 q^{-31} +24 q^{-32} +14 q^{-33} +12 q^{-34} -5 q^{-35} -22 q^{-36} -10 q^{-37} -12 q^{-38} + q^{-39} +19 q^{-40} +11 q^{-41} +13 q^{-42} - q^{-43} -17 q^{-44} -8 q^{-45} -12 q^{-46} -2 q^{-47} +14 q^{-48} +7 q^{-49} +12 q^{-50} +4 q^{-51} -11 q^{-52} -6 q^{-53} -11 q^{-54} -5 q^{-55} +9 q^{-56} +2 q^{-57} +10 q^{-58} +7 q^{-59} -6 q^{-60} -2 q^{-61} -8 q^{-62} -6 q^{-63} +4 q^{-64} -2 q^{-65} +6 q^{-66} +7 q^{-67} -3 q^{-68} +2 q^{-69} -3 q^{-70} -4 q^{-71} +2 q^{-72} -5 q^{-73} +2 q^{-74} +4 q^{-75} -3 q^{-76} +3 q^{-77} + q^{-78} +3 q^{-80} -5 q^{-81} - q^{-82} + q^{-83} -5 q^{-84} +2 q^{-85} + q^{-86} +2 q^{-87} +5 q^{-88} -2 q^{-89} - q^{-90} -4 q^{-92} - q^{-93} - q^{-94} + q^{-95} +5 q^{-96} + q^{-99} -2 q^{-100} - q^{-101} -2 q^{-102} - q^{-103} +2 q^{-104} + q^{-105} + q^{-107} - q^{-110} - q^{-111} + q^{-112} </math>}}

{{Computer Talk Header}}
{{Computer Talk Header}}



Revision as of 15:53, 29 August 2005

5 2.gif

5_2

6 2.gif

6_2

6 1.gif Visit 6 1's page at the Knot Server (KnotPlot driven, includes 3D interactive images!)

Visit 6 1's page at Knotilus!

Visit 6 1's page at the original Knot Atlas!

6_1 is also known as "Stevedore's Knot" (see e.g. [1]), and as the pretzel knot P(5,-1,-1).



A Kolam of a 3x3 dot array
3D depiction
Polygonal depiction
Simple square depiction
An other one
Necklace

Knot presentations

Planar diagram presentation X1425 X7,10,8,11 X3948 X9,3,10,2 X5,12,6,1 X11,6,12,7
Gauss code -1, 4, -3, 1, -5, 6, -2, 3, -4, 2, -6, 5
Dowker-Thistlethwaite code 4 8 12 10 2 6
Conway Notation [42]

Minimum Braid Representative:

BraidPart3.gifBraidPart3.gifBraidPart0.gifBraidPart1.gifBraidPart0.gifBraidPart0.gif
BraidPart4.gifBraidPart4.gifBraidPart3.gifBraidPart2.gifBraidPart3.gifBraidPart0.gif
BraidPart0.gifBraidPart0.gifBraidPart4.gifBraidPart1.gifBraidPart4.gifBraidPart1.gif
BraidPart0.gifBraidPart0.gifBraidPart0.gifBraidPart2.gifBraidPart0.gifBraidPart2.gif

Length is 7, width is 4.

Braid index is 4.

A Morse Link Presentation:

6 1 ML.gif

Three dimensional invariants

Symmetry type Reversible
Unknotting number 1
3-genus 1
Bridge index 2
Super bridge index
Nakanishi index 1
Maximal Thurston-Bennequin number [-5][-3]
Hyperbolic Volume 3.16396
A-Polynomial See Data:6 1/A-polynomial

[edit Notes for 6 1's three dimensional invariants]
6_1 is a ribbon knot (drawings by Yoko Mizuma):

a ribbon diagram
isotopy to a ribbon
6_1 has two slice disks, by Scott Carter
Scott Carter notes that 6_1 bounds two distinct slice disks. He says: "this was spoken of in Fox's Example 10, 11, and 12 in a Quick Trip through Knot Theory ... BTW, the cover of Carter and Saito's Knotted Surfaces and Their Diagrams contains an illustration of such a slice disk". A picture is on the right.

Four dimensional invariants

Smooth 4 genus
Topological 4 genus
Concordance genus
Rasmussen s-Invariant 0

[edit Notes for 6 1's four dimensional invariants]

Polynomial invariants

Alexander polynomial
Conway polynomial
2nd Alexander ideal (db, data sources)
Determinant and Signature { 9, 0 }
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: {9_46, K11n67, K11n97, K11n139, ...}

Same Jones Polynomial (up to mirroring, ): {...}

Vassiliev invariants

V2 and V3: (-2, 1)
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 0 is the signature of 6 1. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
-4-3-2-1012χ
5      11
3       0
1    21 1
-1   11  0
-3   1   -1
-5 11    0
-7       0
-91      1
Integral Khovanov Homology

(db, data source)

  

The Coloured Jones Polynomials