9 38

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9 37.gif

9_37

9 39.gif

9_39

9 38.gif
(KnotPlot image)

See the full Rolfsen Knot Table.

Visit 9 38's page at the Knot Server (KnotPlot driven, includes 3D interactive images!)

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[edit 9 38 Quick Notes]
[edit 9 38 Further Notes and Views]


Knot presentations

Planar diagram presentation X1627 X5,14,6,15 X7,18,8,1 X15,8,16,9 X3,10,4,11 X9,4,10,5 X17,12,18,13 X11,16,12,17 X13,2,14,3
Gauss code -1, 9, -5, 6, -2, 1, -3, 4, -6, 5, -8, 7, -9, 2, -4, 8, -7, 3
Dowker-Thistlethwaite code 6 10 14 18 4 16 2 8 12
Conway Notation [.2.2.2]


Minimum Braid Representative A Morse Link Presentation An Arc Presentation
BraidPart3.gifBraidPart3.gifBraidPart0.gifBraidPart0.gifBraidPart0.gifBraidPart0.gifBraidPart1.gifBraidPart0.gifBraidPart0.gifBraidPart0.gifBraidPart0.gif
BraidPart4.gifBraidPart4.gifBraidPart3.gifBraidPart3.gifBraidPart0.gifBraidPart3.gifBraidPart2.gifBraidPart3.gifBraidPart0.gifBraidPart0.gifBraidPart3.gif
BraidPart0.gifBraidPart0.gifBraidPart4.gifBraidPart4.gifBraidPart1.gifBraidPart4.gifBraidPart0.gifBraidPart4.gifBraidPart3.gifBraidPart3.gifBraidPart4.gif
BraidPart0.gifBraidPart0.gifBraidPart0.gifBraidPart0.gifBraidPart2.gifBraidPart0.gifBraidPart0.gifBraidPart0.gifBraidPart4.gifBraidPart4.gifBraidPart0.gif

Length is 11, width is 4,

Braid index is 4

9 38 ML.gif 9 38 AP.gif
[{11, 4}, {3, 9}, {4, 2}, {5, 10}, {6, 3}, {8, 5}, {1, 6}, {9, 7}, {2, 8}, {7, 11}, {10, 1}]

[edit Notes on presentations of 9 38]


Computer Talk
The above data is available with the Mathematica package KnotTheory`. Your input (in red) is realistic; all else should have the same content as in a real mathematica session, but with different formatting.

(The path below may be different on your system, and possibly also the KnotTheory` date)

In[1]:= AppendTo[$Path, "C:/drorbn/projects/KAtlas/"]; << KnotTheory`
Loading KnotTheory` version of May 31, 2006, 14:15:20.091.

Read more at http://katlas.org/wiki/KnotTheory.

In[3]:= K = Knot["9 38"];
In[4]:= PD[K]
KnotTheory::loading: Loading precomputed data in PD4Knots`.
Out[4]= X1627 X5,14,6,15 X7,18,8,1 X15,8,16,9 X3,10,4,11 X9,4,10,5 X17,12,18,13 X11,16,12,17 X13,2,14,3
In[5]:= GaussCode[K]
Out[5]= -1, 9, -5, 6, -2, 1, -3, 4, -6, 5, -8, 7, -9, 2, -4, 8, -7, 3
In[6]:= DTCode[K]
Out[6]= 6 10 14 18 4 16 2 8 12

(The path below may be different on your system)

In[7]:= AppendTo[$Path, "C:/bin/LinKnot/"];
In[8]:= ConwayNotation[K]
Out[8]= [.2.2.2]
In[9]:= br = BR[K]
KnotTheory::credits: The minimum braids representing the knots with up to 10 crossings were provided by Thomas Gittings. See arXiv:math.GT/0401051.
Out[9]= [math]\displaystyle{ \textrm{BR}(4,\{-1,-1,-2,-2,3,-2,1,-2,-3,-3,-2\}) }[/math]
In[10]:= {First[br], Crossings[br], BraidIndex[K]}
KnotTheory::credits: The braid index data known to KnotTheory` is taken from Charles Livingston's http://www.indiana.edu/~knotinfo/.
KnotTheory::loading: Loading precomputed data in IndianaData`.
Out[10]= { 4, 11, 4 }
In[11]:= Show[BraidPlot[br]]
BraidPart3.gifBraidPart3.gifBraidPart0.gifBraidPart0.gifBraidPart0.gifBraidPart0.gifBraidPart1.gifBraidPart0.gifBraidPart0.gifBraidPart0.gifBraidPart0.gif
BraidPart4.gifBraidPart4.gifBraidPart3.gifBraidPart3.gifBraidPart0.gifBraidPart3.gifBraidPart2.gifBraidPart3.gifBraidPart0.gifBraidPart0.gifBraidPart3.gif
BraidPart0.gifBraidPart0.gifBraidPart4.gifBraidPart4.gifBraidPart1.gifBraidPart4.gifBraidPart0.gifBraidPart4.gifBraidPart3.gifBraidPart3.gifBraidPart4.gif
BraidPart0.gifBraidPart0.gifBraidPart0.gifBraidPart0.gifBraidPart2.gifBraidPart0.gifBraidPart0.gifBraidPart0.gifBraidPart4.gifBraidPart4.gifBraidPart0.gif
Out[11]= -Graphics-
In[12]:= Show[DrawMorseLink[K]]
KnotTheory::credits: "MorseLink was added to KnotTheory` by Siddarth Sankaran at the University of Toronto in the summer of 2005."
KnotTheory::credits: "DrawMorseLink was written by Siddarth Sankaran at the University of Toronto in the summer of 2005."
9 38 ML.gif
Out[12]= -Graphics-
In[13]:= ap = ArcPresentation[K]
Out[13]= ArcPresentation[{11, 4}, {3, 9}, {4, 2}, {5, 10}, {6, 3}, {8, 5}, {1, 6}, {9, 7}, {2, 8}, {7, 11}, {10, 1}]
In[14]:= Draw[ap]
9 38 AP.gif
Out[14]= -Graphics-

Three dimensional invariants

Symmetry type Reversible
Unknotting number [math]\displaystyle{ \{2,3\} }[/math]
3-genus 2
Bridge index 3
Super bridge index [math]\displaystyle{ \{4,7\} }[/math]
Nakanishi index 2
Maximal Thurston-Bennequin number [-14][3]
Hyperbolic Volume 12.9329
A-Polynomial See Data:9 38/A-polynomial

[edit Notes for 9 38's three dimensional invariants]

Four dimensional invariants

Smooth 4 genus [math]\displaystyle{ 2 }[/math]
Topological 4 genus [math]\displaystyle{ 2 }[/math]
Concordance genus [math]\displaystyle{ 2 }[/math]
Rasmussen s-Invariant -4

[edit Notes for 9 38's four dimensional invariants]

Polynomial invariants

Alexander polynomial [math]\displaystyle{ 5 t^2-14 t+19-14 t^{-1} +5 t^{-2} }[/math]
Conway polynomial [math]\displaystyle{ 5 z^4+6 z^2+1 }[/math]
2nd Alexander ideal (db, data sources) [math]\displaystyle{ \{1\} }[/math]
Determinant and Signature { 57, -4 }
Jones polynomial [math]\displaystyle{ q^{-2} -3 q^{-3} +7 q^{-4} -8 q^{-5} +10 q^{-6} -10 q^{-7} +8 q^{-8} -6 q^{-9} +3 q^{-10} - q^{-11} }[/math]
HOMFLY-PT polynomial (db, data sources) [math]\displaystyle{ -z^2 a^{10}+z^4 a^8-z^2 a^8-3 a^8+3 z^4 a^6+7 z^2 a^6+4 a^6+z^4 a^4+z^2 a^4 }[/math]
Kauffman polynomial (db, data sources) [math]\displaystyle{ z^5 a^{13}-2 z^3 a^{13}+z a^{13}+3 z^6 a^{12}-6 z^4 a^{12}+3 z^2 a^{12}+4 z^7 a^{11}-7 z^5 a^{11}+3 z^3 a^{11}-z a^{11}+2 z^8 a^{10}+3 z^6 a^{10}-10 z^4 a^{10}+3 z^2 a^{10}+9 z^7 a^9-15 z^5 a^9+5 z^3 a^9+z a^9+2 z^8 a^8+6 z^6 a^8-15 z^4 a^8+10 z^2 a^8-3 a^8+5 z^7 a^7-4 z^5 a^7-2 z^3 a^7+3 z a^7+6 z^6 a^6-10 z^4 a^6+9 z^2 a^6-4 a^6+3 z^5 a^5-2 z^3 a^5+z^4 a^4-z^2 a^4 }[/math]
The A2 invariant [math]\displaystyle{ -q^{34}+q^{32}+q^{30}-3 q^{28}-2 q^{24}-q^{22}+2 q^{20}+4 q^{16}+q^{12}+2 q^{10}-2 q^8+q^6 }[/math]
The G2 invariant [math]\displaystyle{ q^{176}-2 q^{174}+5 q^{172}-8 q^{170}+8 q^{168}-6 q^{166}-2 q^{164}+18 q^{162}-33 q^{160}+47 q^{158}-46 q^{156}+21 q^{154}+16 q^{152}-65 q^{150}+101 q^{148}-104 q^{146}+70 q^{144}-6 q^{142}-63 q^{140}+112 q^{138}-116 q^{136}+77 q^{134}-8 q^{132}-60 q^{130}+87 q^{128}-70 q^{126}+15 q^{124}+52 q^{122}-95 q^{120}+98 q^{118}-56 q^{116}-20 q^{114}+93 q^{112}-152 q^{110}+153 q^{108}-105 q^{106}+19 q^{104}+69 q^{102}-137 q^{100}+159 q^{98}-125 q^{96}+52 q^{94}+26 q^{92}-90 q^{90}+105 q^{88}-66 q^{86}+q^{84}+64 q^{82}-84 q^{80}+67 q^{78}-9 q^{76}-58 q^{74}+106 q^{72}-112 q^{70}+82 q^{68}-20 q^{66}-43 q^{64}+89 q^{62}-94 q^{60}+77 q^{58}-36 q^{56}+25 q^{52}-40 q^{50}+37 q^{48}-25 q^{46}+13 q^{44}-5 q^{40}+6 q^{38}-6 q^{36}+4 q^{34}-2 q^{32}+q^{30} }[/math]
Further Quantum Invariants
Further quantum knot invariants for 9_38.

A1 Invariants.

Weight Invariant
1 [math]\displaystyle{ -q^{23}+2 q^{21}-3 q^{19}+2 q^{17}-2 q^{15}+2 q^{11}-q^9+4 q^7-2 q^5+q^3 }[/math]
2 [math]\displaystyle{ q^{64}-2 q^{62}-q^{60}+8 q^{58}-5 q^{56}-11 q^{54}+17 q^{52}+q^{50}-21 q^{48}+15 q^{46}+10 q^{44}-20 q^{42}+4 q^{40}+12 q^{38}-8 q^{36}-9 q^{34}+6 q^{32}+9 q^{30}-17 q^{28}-q^{26}+23 q^{24}-14 q^{22}-9 q^{20}+21 q^{18}-5 q^{16}-9 q^{14}+8 q^{12}+q^{10}-2 q^8+q^6 }[/math]
3 [math]\displaystyle{ -q^{123}+2 q^{121}+q^{119}-4 q^{117}-5 q^{115}+8 q^{113}+17 q^{111}-11 q^{109}-36 q^{107}+q^{105}+57 q^{103}+25 q^{101}-73 q^{99}-57 q^{97}+71 q^{95}+95 q^{93}-52 q^{91}-124 q^{89}+22 q^{87}+134 q^{85}+11 q^{83}-128 q^{81}-41 q^{79}+112 q^{77}+61 q^{75}-84 q^{73}-69 q^{71}+50 q^{69}+79 q^{67}-19 q^{65}-79 q^{63}-23 q^{61}+79 q^{59}+57 q^{57}-70 q^{55}-100 q^{53}+53 q^{51}+126 q^{49}-27 q^{47}-139 q^{45}-6 q^{43}+131 q^{41}+37 q^{39}-103 q^{37}-54 q^{35}+72 q^{33}+50 q^{31}-33 q^{29}-42 q^{27}+15 q^{25}+27 q^{23}-3 q^{21}-11 q^{19}+5 q^{15}+q^{13}-2 q^{11}+q^9 }[/math]
4 [math]\displaystyle{ q^{200}-2 q^{198}-q^{196}+4 q^{194}+q^{192}+2 q^{190}-14 q^{188}-11 q^{186}+19 q^{184}+27 q^{182}+32 q^{180}-51 q^{178}-95 q^{176}-18 q^{174}+88 q^{172}+199 q^{170}+20 q^{168}-224 q^{166}-259 q^{164}-40 q^{162}+414 q^{160}+367 q^{158}-92 q^{156}-533 q^{154}-498 q^{152}+294 q^{150}+718 q^{148}+409 q^{146}-425 q^{144}-921 q^{142}-199 q^{140}+661 q^{138}+851 q^{136}+23 q^{134}-917 q^{132}-621 q^{130}+282 q^{128}+892 q^{126}+390 q^{124}-593 q^{122}-701 q^{120}-62 q^{118}+649 q^{116}+505 q^{114}-231 q^{112}-584 q^{110}-273 q^{108}+361 q^{106}+518 q^{104}+106 q^{102}-442 q^{100}-483 q^{98}+30 q^{96}+537 q^{94}+518 q^{92}-228 q^{90}-717 q^{88}-423 q^{86}+427 q^{84}+917 q^{82}+183 q^{80}-711 q^{78}-860 q^{76}+29 q^{74}+975 q^{72}+609 q^{70}-310 q^{68}-903 q^{66}-415 q^{64}+561 q^{62}+657 q^{60}+153 q^{58}-502 q^{56}-485 q^{54}+93 q^{52}+331 q^{50}+261 q^{48}-104 q^{46}-245 q^{44}-59 q^{42}+63 q^{40}+127 q^{38}+14 q^{36}-60 q^{34}-25 q^{32}-6 q^{30}+30 q^{28}+9 q^{26}-9 q^{24}-2 q^{22}-3 q^{20}+5 q^{18}+q^{16}-2 q^{14}+q^{12} }[/math]
5 [math]\displaystyle{ -q^{295}+2 q^{293}+q^{291}-4 q^{289}-q^{287}+2 q^{285}+4 q^{283}+8 q^{281}+3 q^{279}-22 q^{277}-33 q^{275}-7 q^{273}+38 q^{271}+85 q^{269}+73 q^{267}-33 q^{265}-188 q^{263}-231 q^{261}-58 q^{259}+258 q^{257}+497 q^{255}+370 q^{253}-174 q^{251}-802 q^{249}-921 q^{247}-237 q^{245}+898 q^{243}+1612 q^{241}+1111 q^{239}-536 q^{237}-2185 q^{235}-2311 q^{233}-455 q^{231}+2207 q^{229}+3536 q^{227}+2067 q^{225}-1463 q^{223}-4335 q^{221}-3908 q^{219}-91 q^{217}+4298 q^{215}+5538 q^{213}+2172 q^{211}-3367 q^{209}-6484 q^{207}-4264 q^{205}+1709 q^{203}+6512 q^{201}+5917 q^{199}+248 q^{197}-5715 q^{195}-6815 q^{193}-2036 q^{191}+4383 q^{189}+6870 q^{187}+3358 q^{185}-2886 q^{183}-6293 q^{181}-4057 q^{179}+1545 q^{177}+5352 q^{175}+4193 q^{173}-499 q^{171}-4314 q^{169}-4003 q^{167}-233 q^{165}+3404 q^{163}+3692 q^{161}+729 q^{159}-2619 q^{157}-3475 q^{155}-1256 q^{153}+2009 q^{151}+3453 q^{149}+1874 q^{147}-1345 q^{145}-3561 q^{143}-2812 q^{141}+530 q^{139}+3729 q^{137}+3936 q^{135}+651 q^{133}-3654 q^{131}-5182 q^{129}-2181 q^{127}+3138 q^{125}+6194 q^{123}+3972 q^{121}-2022 q^{119}-6668 q^{117}-5687 q^{115}+350 q^{113}+6292 q^{111}+6943 q^{109}+1597 q^{107}-5076 q^{105}-7334 q^{103}-3374 q^{101}+3203 q^{99}+6731 q^{97}+4536 q^{95}-1149 q^{93}-5334 q^{91}-4783 q^{89}-550 q^{87}+3477 q^{85}+4201 q^{83}+1609 q^{81}-1770 q^{79}-3114 q^{77}-1837 q^{75}+474 q^{73}+1900 q^{71}+1586 q^{69}+198 q^{67}-956 q^{65}-1062 q^{63}-387 q^{61}+342 q^{59}+591 q^{57}+332 q^{55}-63 q^{53}-275 q^{51}-199 q^{49}-12 q^{47}+100 q^{45}+96 q^{43}+26 q^{41}-29 q^{39}-45 q^{37}-10 q^{35}+15 q^{33}+12 q^{31}+3 q^{29}-5 q^{25}-3 q^{23}+5 q^{21}+q^{19}-2 q^{17}+q^{15} }[/math]

A2 Invariants.

Weight Invariant
1,0 [math]\displaystyle{ -q^{34}+q^{32}+q^{30}-3 q^{28}-2 q^{24}-q^{22}+2 q^{20}+4 q^{16}+q^{12}+2 q^{10}-2 q^8+q^6 }[/math]
1,1 [math]\displaystyle{ q^{92}-4 q^{90}+12 q^{88}-28 q^{86}+58 q^{84}-106 q^{82}+176 q^{80}-260 q^{78}+349 q^{76}-430 q^{74}+474 q^{72}-466 q^{70}+394 q^{68}-256 q^{66}+58 q^{64}+176 q^{62}-408 q^{60}+628 q^{58}-794 q^{56}+896 q^{54}-910 q^{52}+836 q^{50}-700 q^{48}+484 q^{46}-260 q^{44}+10 q^{42}+192 q^{40}-348 q^{38}+441 q^{36}-456 q^{34}+438 q^{32}-366 q^{30}+290 q^{28}-200 q^{26}+136 q^{24}-82 q^{22}+46 q^{20}-20 q^{18}+10 q^{16}-4 q^{14}+q^{12} }[/math]
2,0 [math]\displaystyle{ q^{86}-q^{84}-q^{82}+q^{80}+5 q^{78}-9 q^{74}-3 q^{72}+8 q^{70}+5 q^{68}-7 q^{66}+12 q^{62}+4 q^{60}-11 q^{58}-4 q^{56}+4 q^{54}-7 q^{52}-8 q^{50}-2 q^{48}-q^{46}-5 q^{44}+4 q^{42}+7 q^{40}-6 q^{38}+q^{36}+14 q^{34}+4 q^{32}-11 q^{30}+3 q^{28}+12 q^{26}-9 q^{22}+q^{20}+7 q^{18}-q^{16}-2 q^{14}+q^{12} }[/math]

A3 Invariants.

Weight Invariant
0,1,0 [math]\displaystyle{ q^{74}-2 q^{72}+q^{70}+4 q^{68}-8 q^{66}+4 q^{64}+9 q^{62}-15 q^{60}+7 q^{58}+10 q^{56}-17 q^{54}+4 q^{52}+10 q^{50}-10 q^{48}-3 q^{46}+2 q^{44}-2 q^{42}-8 q^{40}-7 q^{38}+12 q^{36}-3 q^{34}-8 q^{32}+21 q^{30}+q^{28}-10 q^{26}+16 q^{24}-q^{22}-7 q^{20}+6 q^{18}-2 q^{14}+q^{12} }[/math]
1,0,0 [math]\displaystyle{ -q^{45}+q^{43}+q^{39}-3 q^{37}-4 q^{33}-q^{31}-q^{29}+2 q^{27}+2 q^{25}+2 q^{23}+4 q^{21}+2 q^{17}-q^{15}+2 q^{13}-2 q^{11}+q^9 }[/math]

A4 Invariants.

Weight Invariant
0,1,0,0 [math]\displaystyle{ q^{96}-q^{94}-3 q^{92}+3 q^{90}+5 q^{88}-4 q^{86}-4 q^{84}+9 q^{82}+6 q^{80}-11 q^{78}-4 q^{76}+14 q^{74}+q^{72}-14 q^{70}+6 q^{68}+11 q^{66}-11 q^{64}-11 q^{62}+4 q^{60}-9 q^{58}-20 q^{56}-q^{54}+6 q^{52}-11 q^{50}-q^{48}+23 q^{46}+7 q^{44}-7 q^{42}+10 q^{40}+16 q^{38}-3 q^{36}-6 q^{34}+7 q^{32}+6 q^{30}-5 q^{28}-2 q^{26}+4 q^{24}-2 q^{20}+q^{18} }[/math]
1,0,0,0 [math]\displaystyle{ -q^{56}+q^{54}+q^{48}-3 q^{46}-4 q^{42}-3 q^{40}-q^{38}-q^{36}+2 q^{34}+2 q^{32}+4 q^{30}+2 q^{28}+4 q^{26}+2 q^{22}-q^{18}+2 q^{16}-2 q^{14}+q^{12} }[/math]

B2 Invariants.

Weight Invariant
0,1 [math]\displaystyle{ -q^{74}+2 q^{72}-5 q^{70}+8 q^{68}-12 q^{66}+16 q^{64}-17 q^{62}+17 q^{60}-15 q^{58}+10 q^{56}-3 q^{54}-6 q^{52}+14 q^{50}-24 q^{48}+29 q^{46}-34 q^{44}+32 q^{42}-30 q^{40}+23 q^{38}-14 q^{36}+7 q^{34}+4 q^{32}-9 q^{30}+17 q^{28}-16 q^{26}+18 q^{24}-15 q^{22}+13 q^{20}-8 q^{18}+4 q^{16}-2 q^{14}+q^{12} }[/math]
1,0 [math]\displaystyle{ q^{120}-2 q^{116}-2 q^{114}+3 q^{112}+6 q^{110}-q^{108}-10 q^{106}-5 q^{104}+12 q^{102}+13 q^{100}-7 q^{98}-18 q^{96}-2 q^{94}+19 q^{92}+10 q^{90}-14 q^{88}-15 q^{86}+6 q^{84}+15 q^{82}-14 q^{78}-3 q^{76}+11 q^{74}+4 q^{72}-13 q^{70}-9 q^{68}+7 q^{66}+9 q^{64}-8 q^{62}-14 q^{60}+4 q^{58}+15 q^{56}+2 q^{54}-16 q^{52}-5 q^{50}+17 q^{48}+17 q^{46}-8 q^{44}-16 q^{42}+q^{40}+17 q^{38}+8 q^{36}-8 q^{34}-10 q^{32}+2 q^{30}+7 q^{28}+2 q^{26}-2 q^{24}-2 q^{22}+q^{18} }[/math]

D4 Invariants.

Weight Invariant
1,0,0,0 [math]\displaystyle{ q^{102}-2 q^{100}+3 q^{98}-4 q^{96}+7 q^{94}-10 q^{92}+11 q^{90}-12 q^{88}+15 q^{86}-14 q^{84}+12 q^{82}-10 q^{80}+9 q^{78}-4 q^{76}-4 q^{74}+6 q^{72}-9 q^{70}+16 q^{68}-23 q^{66}+21 q^{64}-26 q^{62}+24 q^{60}-29 q^{58}+16 q^{56}-23 q^{54}+15 q^{52}-9 q^{50}+5 q^{48}+q^{46}+q^{44}+16 q^{42}-7 q^{40}+15 q^{38}-12 q^{36}+17 q^{34}-10 q^{32}+10 q^{30}-10 q^{28}+7 q^{26}-3 q^{24}+2 q^{22}-2 q^{20}+q^{18} }[/math]

G2 Invariants.

Weight Invariant
1,0 [math]\displaystyle{ q^{176}-2 q^{174}+5 q^{172}-8 q^{170}+8 q^{168}-6 q^{166}-2 q^{164}+18 q^{162}-33 q^{160}+47 q^{158}-46 q^{156}+21 q^{154}+16 q^{152}-65 q^{150}+101 q^{148}-104 q^{146}+70 q^{144}-6 q^{142}-63 q^{140}+112 q^{138}-116 q^{136}+77 q^{134}-8 q^{132}-60 q^{130}+87 q^{128}-70 q^{126}+15 q^{124}+52 q^{122}-95 q^{120}+98 q^{118}-56 q^{116}-20 q^{114}+93 q^{112}-152 q^{110}+153 q^{108}-105 q^{106}+19 q^{104}+69 q^{102}-137 q^{100}+159 q^{98}-125 q^{96}+52 q^{94}+26 q^{92}-90 q^{90}+105 q^{88}-66 q^{86}+q^{84}+64 q^{82}-84 q^{80}+67 q^{78}-9 q^{76}-58 q^{74}+106 q^{72}-112 q^{70}+82 q^{68}-20 q^{66}-43 q^{64}+89 q^{62}-94 q^{60}+77 q^{58}-36 q^{56}+25 q^{52}-40 q^{50}+37 q^{48}-25 q^{46}+13 q^{44}-5 q^{40}+6 q^{38}-6 q^{36}+4 q^{34}-2 q^{32}+q^{30} }[/math]

.

Computer Talk
The above data is available with the Mathematica package KnotTheory`, as shown in the (simulated) Mathematica session below. Your input (in red) is realistic; all else should have the same content as in a real mathematica session, but with different formatting. This Mathematica session is also available (albeit only for the knot 5_2) as the notebook PolynomialInvariantsSession.nb.

(The path below may be different on your system, and possibly also the KnotTheory` date)

In[1]:= AppendTo[$Path, "C:/drorbn/projects/KAtlas/"]; << KnotTheory`
Loading KnotTheory` version of August 31, 2006, 11:25:27.5625.

Read more at http://katlas.math.toronto.edu/wiki/KnotTheory.

In[3]:= K = Knot["9 38"];
In[4]:= Alexander[K][t]
KnotTheory::loading: Loading precomputed data in PD4Knots`.
Out[4]= [math]\displaystyle{ 5 t^2-14 t+19-14 t^{-1} +5 t^{-2} }[/math]
In[5]:= Conway[K][z]
Out[5]= [math]\displaystyle{ 5 z^4+6 z^2+1 }[/math]
In[6]:= Alexander[K, 2][t]
KnotTheory::credits: The program Alexander[K, r] to compute Alexander ideals was written by Jana Archibald at the University of Toronto in the summer of 2005.
Out[6]= [math]\displaystyle{ \{1\} }[/math]
In[7]:= {KnotDet[K], KnotSignature[K]}
Out[7]= { 57, -4 }
In[8]:= Jones[K][q]
KnotTheory::loading: Loading precomputed data in Jones4Knots`.
Out[8]= [math]\displaystyle{ q^{-2} -3 q^{-3} +7 q^{-4} -8 q^{-5} +10 q^{-6} -10 q^{-7} +8 q^{-8} -6 q^{-9} +3 q^{-10} - q^{-11} }[/math]
In[9]:= HOMFLYPT[K][a, z]
KnotTheory::credits: The HOMFLYPT program was written by Scott Morrison.
Out[9]= [math]\displaystyle{ -z^2 a^{10}+z^4 a^8-z^2 a^8-3 a^8+3 z^4 a^6+7 z^2 a^6+4 a^6+z^4 a^4+z^2 a^4 }[/math]
In[10]:= Kauffman[K][a, z]
KnotTheory::loading: Loading precomputed data in Kauffman4Knots`.
Out[10]= [math]\displaystyle{ z^5 a^{13}-2 z^3 a^{13}+z a^{13}+3 z^6 a^{12}-6 z^4 a^{12}+3 z^2 a^{12}+4 z^7 a^{11}-7 z^5 a^{11}+3 z^3 a^{11}-z a^{11}+2 z^8 a^{10}+3 z^6 a^{10}-10 z^4 a^{10}+3 z^2 a^{10}+9 z^7 a^9-15 z^5 a^9+5 z^3 a^9+z a^9+2 z^8 a^8+6 z^6 a^8-15 z^4 a^8+10 z^2 a^8-3 a^8+5 z^7 a^7-4 z^5 a^7-2 z^3 a^7+3 z a^7+6 z^6 a^6-10 z^4 a^6+9 z^2 a^6-4 a^6+3 z^5 a^5-2 z^3 a^5+z^4 a^4-z^2 a^4 }[/math]

"Similar" Knots (within the Atlas)

Same Alexander/Conway Polynomial: {10_63,}

Same Jones Polynomial (up to mirroring, [math]\displaystyle{ q\leftrightarrow q^{-1} }[/math]): {}

Computer Talk
The above data is available with the Mathematica package KnotTheory`. Your input (in red) is realistic; all else should have the same content as in a real mathematica session, but with different formatting.

(The path below may be different on your system, and possibly also the KnotTheory` date)

In[1]:= AppendTo[$Path, "C:/drorbn/projects/KAtlas/"]; << KnotTheory`
Loading KnotTheory` version of May 31, 2006, 14:15:20.091.

Read more at http://katlas.math.toronto.edu/wiki/KnotTheory.

In[3]:= K = Knot["9 38"];
In[4]:= {A = Alexander[K][t], J = Jones[K][q]}
KnotTheory::loading: Loading precomputed data in PD4Knots`.
KnotTheory::loading: Loading precomputed data in Jones4Knots`.
Out[4]= { [math]\displaystyle{ 5 t^2-14 t+19-14 t^{-1} +5 t^{-2} }[/math], [math]\displaystyle{ q^{-2} -3 q^{-3} +7 q^{-4} -8 q^{-5} +10 q^{-6} -10 q^{-7} +8 q^{-8} -6 q^{-9} +3 q^{-10} - q^{-11} }[/math] }
In[5]:= DeleteCases[Select[AllKnots[], (A === Alexander[#][t]) &], K]
KnotTheory::loading: Loading precomputed data in DTCode4KnotsTo11`.
KnotTheory::credits: The GaussCode to PD conversion was written by Siddarth Sankaran at the University of Toronto in the summer of 2005.
Out[5]= {10_63,}
In[6]:= DeleteCases[ Select[ AllKnots[], (J === Jones[#][q] || (J /. q -> 1/q) === Jones[#][q]) & ], K ]
KnotTheory::loading: Loading precomputed data in Jones4Knots11`.
Out[6]= {}

Vassiliev invariants

V2 and V3: (6, -14)
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
[math]\displaystyle{ 24 }[/math] [math]\displaystyle{ -112 }[/math] [math]\displaystyle{ 288 }[/math] [math]\displaystyle{ 684 }[/math] [math]\displaystyle{ 100 }[/math] [math]\displaystyle{ -2688 }[/math] [math]\displaystyle{ -\frac{13888}{3} }[/math] [math]\displaystyle{ -\frac{2368}{3} }[/math] [math]\displaystyle{ -592 }[/math] [math]\displaystyle{ 2304 }[/math] [math]\displaystyle{ 6272 }[/math] [math]\displaystyle{ 16416 }[/math] [math]\displaystyle{ 2400 }[/math] [math]\displaystyle{ \frac{160231}{5} }[/math] [math]\displaystyle{ \frac{15308}{15} }[/math] [math]\displaystyle{ \frac{59748}{5} }[/math] [math]\displaystyle{ 259 }[/math] [math]\displaystyle{ \frac{7671}{5} }[/math]

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 [math]\displaystyle{ t^rq^j }[/math] are shown, along with their alternating sums [math]\displaystyle{ \chi }[/math] (fixed [math]\displaystyle{ j }[/math], alternation over [math]\displaystyle{ r }[/math]). The squares with yellow highlighting are those on the "critical diagonals", where [math]\displaystyle{ j-2r=s+1 }[/math] or [math]\displaystyle{ j-2r=s-1 }[/math], where [math]\displaystyle{ s= }[/math]-4 is the signature of 9 38. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.   
\ r
  \  
j \
 -9-8-7-6-5-4-3-2-10χ
-3         11
-5        31-2
-7       4  4
-9      43  -1
-11     64   2
-13    44    0
-15   46     -2
-17  24      2
-19 14       -3
-21 2        2
-231         -1
Integral Khovanov Homology

(db, data source)

  
[math]\displaystyle{ \dim{\mathcal G}_{2r+i}\operatorname{KH}^r_{\mathbb Z} }[/math] [math]\displaystyle{ i=-5 }[/math] [math]\displaystyle{ i=-3 }[/math]
[math]\displaystyle{ r=-9 }[/math] [math]\displaystyle{ {\mathbb Z} }[/math]
[math]\displaystyle{ r=-8 }[/math] [math]\displaystyle{ {\mathbb Z}^{2}\oplus{\mathbb Z}_2 }[/math] [math]\displaystyle{ {\mathbb Z} }[/math]
[math]\displaystyle{ r=-7 }[/math] [math]\displaystyle{ {\mathbb Z}^{4}\oplus{\mathbb Z}_2^{2} }[/math] [math]\displaystyle{ {\mathbb Z}^{2} }[/math]
[math]\displaystyle{ r=-6 }[/math] [math]\displaystyle{ {\mathbb Z}^{4}\oplus{\mathbb Z}_2^{4} }[/math] [math]\displaystyle{ {\mathbb Z}^{4} }[/math]
[math]\displaystyle{ r=-5 }[/math] [math]\displaystyle{ {\mathbb Z}^{6}\oplus{\mathbb Z}_2^{4} }[/math] [math]\displaystyle{ {\mathbb Z}^{4} }[/math]
[math]\displaystyle{ r=-4 }[/math] [math]\displaystyle{ {\mathbb Z}^{4}\oplus{\mathbb Z}_2^{6} }[/math] [math]\displaystyle{ {\mathbb Z}^{6} }[/math]
[math]\displaystyle{ r=-3 }[/math] [math]\displaystyle{ {\mathbb Z}^{4}\oplus{\mathbb Z}_2^{4} }[/math] [math]\displaystyle{ {\mathbb Z}^{4} }[/math]
[math]\displaystyle{ r=-2 }[/math] [math]\displaystyle{ {\mathbb Z}^{3}\oplus{\mathbb Z}_2^{4} }[/math] [math]\displaystyle{ {\mathbb Z}^{4} }[/math]
[math]\displaystyle{ r=-1 }[/math] [math]\displaystyle{ {\mathbb Z}_2^{3} }[/math] [math]\displaystyle{ {\mathbb Z}^{3} }[/math]
[math]\displaystyle{ r=0 }[/math] [math]\displaystyle{ {\mathbb Z} }[/math] [math]\displaystyle{ {\mathbb Z} }[/math]

The Coloured Jones Polynomials

The Coloured Jones Polynomials (in the [math]\displaystyle{ n+1 }[/math]-dimensional representation of [math]\displaystyle{ sl(2) }[/math])

 [math]\displaystyle{ n }[/math]  [math]\displaystyle{ J_n }[/math]
2 [math]\displaystyle{ q^{-4} -3 q^{-5} +3 q^{-6} +8 q^{-7} -20 q^{-8} +7 q^{-9} +34 q^{-10} -50 q^{-11} +2 q^{-12} +71 q^{-13} -74 q^{-14} -14 q^{-15} +97 q^{-16} -77 q^{-17} -29 q^{-18} +98 q^{-19} -57 q^{-20} -37 q^{-21} +74 q^{-22} -27 q^{-23} -32 q^{-24} +38 q^{-25} -5 q^{-26} -16 q^{-27} +10 q^{-28} + q^{-29} -3 q^{-30} + q^{-31} }[/math]
3 [math]\displaystyle{ q^{-6} -3 q^{-7} +3 q^{-8} +4 q^{-9} -4 q^{-10} -14 q^{-11} +11 q^{-12} +34 q^{-13} -16 q^{-14} -71 q^{-15} +20 q^{-16} +117 q^{-17} +6 q^{-18} -197 q^{-19} -29 q^{-20} +257 q^{-21} +100 q^{-22} -334 q^{-23} -162 q^{-24} +369 q^{-25} +253 q^{-26} -407 q^{-27} -315 q^{-28} +399 q^{-29} +380 q^{-30} -385 q^{-31} -417 q^{-32} +343 q^{-33} +440 q^{-34} -287 q^{-35} -446 q^{-36} +224 q^{-37} +425 q^{-38} -142 q^{-39} -395 q^{-40} +71 q^{-41} +338 q^{-42} -3 q^{-43} -272 q^{-44} -41 q^{-45} +192 q^{-46} +69 q^{-47} -125 q^{-48} -65 q^{-49} +64 q^{-50} +53 q^{-51} -27 q^{-52} -33 q^{-53} +8 q^{-54} +16 q^{-55} -2 q^{-56} -5 q^{-57} - q^{-58} +3 q^{-59} - q^{-60} }[/math]
4 [math]\displaystyle{ q^{-8} -3 q^{-9} +3 q^{-10} +4 q^{-11} -8 q^{-12} +2 q^{-13} -10 q^{-14} +21 q^{-15} +25 q^{-16} -44 q^{-17} -17 q^{-18} -45 q^{-19} +95 q^{-20} +138 q^{-21} -108 q^{-22} -139 q^{-23} -231 q^{-24} +236 q^{-25} +503 q^{-26} -38 q^{-27} -377 q^{-28} -809 q^{-29} +219 q^{-30} +1158 q^{-31} +466 q^{-32} -473 q^{-33} -1785 q^{-34} -269 q^{-35} +1751 q^{-36} +1385 q^{-37} -107 q^{-38} -2731 q^{-39} -1158 q^{-40} +1900 q^{-41} +2279 q^{-42} +627 q^{-43} -3221 q^{-44} -2008 q^{-45} +1606 q^{-46} +2768 q^{-47} +1373 q^{-48} -3202 q^{-49} -2515 q^{-50} +1093 q^{-51} +2809 q^{-52} +1921 q^{-53} -2790 q^{-54} -2672 q^{-55} +459 q^{-56} +2498 q^{-57} +2274 q^{-58} -2054 q^{-59} -2528 q^{-60} -252 q^{-61} +1859 q^{-62} +2382 q^{-63} -1071 q^{-64} -2026 q^{-65} -862 q^{-66} +956 q^{-67} +2086 q^{-68} -131 q^{-69} -1198 q^{-70} -1052 q^{-71} +96 q^{-72} +1364 q^{-73} +365 q^{-74} -364 q^{-75} -743 q^{-76} -328 q^{-77} +572 q^{-78} +330 q^{-79} +77 q^{-80} -284 q^{-81} -281 q^{-82} +118 q^{-83} +111 q^{-84} +112 q^{-85} -40 q^{-86} -102 q^{-87} +7 q^{-88} +5 q^{-89} +35 q^{-90} +4 q^{-91} -19 q^{-92} +2 q^{-93} -3 q^{-94} +5 q^{-95} + q^{-96} -3 q^{-97} + q^{-98} }[/math]
5 [math]\displaystyle{ q^{-10} -3 q^{-11} +3 q^{-12} +4 q^{-13} -8 q^{-14} -2 q^{-15} +6 q^{-16} +12 q^{-18} +7 q^{-19} -33 q^{-20} -37 q^{-21} +22 q^{-22} +55 q^{-23} +82 q^{-24} +11 q^{-25} -145 q^{-26} -224 q^{-27} -54 q^{-28} +267 q^{-29} +477 q^{-30} +270 q^{-31} -394 q^{-32} -953 q^{-33} -729 q^{-34} +373 q^{-35} +1631 q^{-36} +1658 q^{-37} -80 q^{-38} -2379 q^{-39} -3040 q^{-40} -904 q^{-41} +2975 q^{-42} +5037 q^{-43} +2512 q^{-44} -3103 q^{-45} -7067 q^{-46} -5137 q^{-47} +2424 q^{-48} +9222 q^{-49} +8197 q^{-50} -908 q^{-51} -10595 q^{-52} -11714 q^{-53} -1536 q^{-54} +11480 q^{-55} +14870 q^{-56} +4438 q^{-57} -11246 q^{-58} -17656 q^{-59} -7573 q^{-60} +10499 q^{-61} +19516 q^{-62} +10432 q^{-63} -9024 q^{-64} -20712 q^{-65} -12892 q^{-66} +7498 q^{-67} +21044 q^{-68} +14737 q^{-69} -5739 q^{-70} -20919 q^{-71} -16091 q^{-72} +4156 q^{-73} +20295 q^{-74} +16953 q^{-75} -2520 q^{-76} -19340 q^{-77} -17535 q^{-78} +891 q^{-79} +18076 q^{-80} +17809 q^{-81} +828 q^{-82} -16377 q^{-83} -17823 q^{-84} -2746 q^{-85} +14306 q^{-86} +17498 q^{-87} +4643 q^{-88} -11685 q^{-89} -16664 q^{-90} -6553 q^{-91} +8704 q^{-92} +15262 q^{-93} +8050 q^{-94} -5441 q^{-95} -13152 q^{-96} -9040 q^{-97} +2285 q^{-98} +10483 q^{-99} +9150 q^{-100} +522 q^{-101} -7483 q^{-102} -8445 q^{-103} -2518 q^{-104} +4510 q^{-105} +6930 q^{-106} +3639 q^{-107} -1944 q^{-108} -5079 q^{-109} -3758 q^{-110} +121 q^{-111} +3113 q^{-112} +3212 q^{-113} +928 q^{-114} -1549 q^{-115} -2289 q^{-116} -1208 q^{-117} +451 q^{-118} +1356 q^{-119} +1054 q^{-120} +100 q^{-121} -642 q^{-122} -707 q^{-123} -263 q^{-124} +221 q^{-125} +370 q^{-126} +219 q^{-127} -14 q^{-128} -163 q^{-129} -136 q^{-130} -18 q^{-131} +54 q^{-132} +46 q^{-133} +29 q^{-134} -8 q^{-135} -30 q^{-136} -6 q^{-137} +7 q^{-138} + q^{-139} +3 q^{-140} +3 q^{-141} -5 q^{-142} - q^{-143} +3 q^{-144} - q^{-145} }[/math]

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.

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.

9 37.gif

9_37

9 39.gif

9_39

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