9 38

9_37

9_39

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

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]

Three dimensional invariants

Symmetry type Reversible Unknotting number $\{2,3\}$ 3-genus 2 Bridge index 3 Super bridge index $\{4,7\}$ 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 $2$ Topological 4 genus $2$ Concordance genus $2$ Rasmussen s-Invariant -4

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

Polynomial invariants

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

Further Quantum Invariants

Further quantum knot invariants for 9_38.

A1 Invariants.

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

A2 Invariants.

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

A3 Invariants.

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

A4 Invariants.

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

B2 Invariants.

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

D4 Invariants.

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

G2 Invariants.

Weight

Invariant

1,0

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

.

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]=

$5t^{2}-14t+19-14t^{-1}+5t^{-2}$

In[5]:=

Conway[K][z]

Out[5]=

$5z^{4}+6z^{2}+1$

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]=

$\{1\}$

In[7]:=

{KnotDet[K], KnotSignature[K]}

Out[7]=

{ 57, -4 }

In[8]:=

Jones[K][q]

KnotTheory::loading: Loading precomputed data in Jones4Knots`.

Out[8]=

$q^{-2}-3q^{-3}+7q^{-4}-8q^{-5}+10q^{-6}-10q^{-7}+8q^{-8}-6q^{-9}+3q^{-10}-q^{-11}$

In[9]:=

HOMFLYPT[K][a, z]

KnotTheory::credits: The HOMFLYPT program was written by Scott Morrison.

Out[9]=

$-z^{2}a^{10}+z^{4}a^{8}-z^{2}a^{8}-3a^{8}+3z^{4}a^{6}+7z^{2}a^{6}+4a^{6}+z^{4}a^{4}+z^{2}a^{4}$

In[10]:=

Kauffman[K][a, z]

KnotTheory::loading: Loading precomputed data in Kauffman4Knots`.

Out[10]=

$z^{5}a^{13}-2z^{3}a^{13}+za^{13}+3z^{6}a^{12}-6z^{4}a^{12}+3z^{2}a^{12}+4z^{7}a^{11}-7z^{5}a^{11}+3z^{3}a^{11}-za^{11}+2z^{8}a^{10}+3z^{6}a^{10}-10z^{4}a^{10}+3z^{2}a^{10}+9z^{7}a^{9}-15z^{5}a^{9}+5z^{3}a^{9}+za^{9}+2z^{8}a^{8}+6z^{6}a^{8}-15z^{4}a^{8}+10z^{2}a^{8}-3a^{8}+5z^{7}a^{7}-4z^{5}a^{7}-2z^{3}a^{7}+3za^{7}+6z^{6}a^{6}-10z^{4}a^{6}+9z^{2}a^{6}-4a^{6}+3z^{5}a^{5}-2z^{3}a^{5}+z^{4}a^{4}-z^{2}a^{4}$

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 $24$ $-112$ $288$ $684$ $100$ $-2688$ $-{\frac {13888}{3}}$ $-{\frac {2368}{3}}$ $-592$ $2304$ $6272$ $16416$ $2400$ ${\frac {160231}{5}}$ ${\frac {15308}{15}}$ ${\frac {59748}{5}}$ $259$ ${\frac {7671}{5}}$

V_2,1 through V_6,9 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 $t^{r}q^{j}$ are shown, along with their alternating sums $\chi$ (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 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 -1 0 χ -3                   1 1 -5                 3 1 -2 -7               4     4 -9             4 3     -1 -11           6 4       2 -13         4 4         0 -15       4 6           -2 -17     2 4             2 -19   1 4               -3 -21   2                 2 -23 1                   -1

Integral Khovanov Homology (db, data source)

$\dim {\mathcal {G}}_{2r+i}\operatorname {KH} _{\mathbb {Z} }^{r}$ $i=-5$ $i=-3$ $r=-9$ ${\mathbb {Z} }$ $r=-8$ ${\mathbb {Z} }^{2}\oplus {\mathbb {Z} }_{2}$ ${\mathbb {Z} }$ $r=-7$ ${\mathbb {Z} }^{4}\oplus {\mathbb {Z} }_{2}^{2}$ ${\mathbb {Z} }^{2}$ $r=-6$ ${\mathbb {Z} }^{4}\oplus {\mathbb {Z} }_{2}^{4}$ ${\mathbb {Z} }^{4}$ $r=-5$ ${\mathbb {Z} }^{6}\oplus {\mathbb {Z} }_{2}^{4}$ ${\mathbb {Z} }^{4}$ $r=-4$ ${\mathbb {Z} }^{4}\oplus {\mathbb {Z} }_{2}^{6}$ ${\mathbb {Z} }^{6}$ $r=-3$ ${\mathbb {Z} }^{4}\oplus {\mathbb {Z} }_{2}^{4}$ ${\mathbb {Z} }^{4}$ $r=-2$ ${\mathbb {Z} }^{3}\oplus {\mathbb {Z} }_{2}^{4}$ ${\mathbb {Z} }^{4}$ $r=-1$ ${\mathbb {Z} }_{2}^{3}$ ${\mathbb {Z} }^{3}$ $r=0$ ${\mathbb {Z} }$ ${\mathbb {Z} }$

Computer Talk

Much of the above data can be recomputed by Mathematica using the package KnotTheory`. See A Sample KnotTheory` Session.

${\textrm {Include}}({\textrm {ColouredJonesM.mhtml}})$

In[1]:=	<< KnotTheory`
Loading KnotTheory` (version of August 17, 2005, 14:44:34)...
In[2]:=	Crossings[Knot[9, 38]]
Out[2]=	9
In[3]:=	PD[Knot[9, 38]]
Out[3]=	PD[X[1, 6, 2, 7], X[5, 14, 6, 15], X[7, 18, 8, 1], X[15, 8, 16, 9], X[3, 10, 4, 11], X[9, 4, 10, 5], X[17, 12, 18, 13], X[11, 16, 12, 17], X[13, 2, 14, 3]]
In[4]:=	GaussCode[Knot[9, 38]]
Out[4]=	GaussCode[-1, 9, -5, 6, -2, 1, -3, 4, -6, 5, -8, 7, -9, 2, -4, 8, -7, 3]
In[5]:=	BR[Knot[9, 38]]
Out[5]=	BR[4, {-1, -1, -2, -2, 3, -2, 1, -2, -3, -3, -2}]
In[6]:=	alex = Alexander[Knot[9, 38]][t]
Out[6]=	5 14 2 19 + -- - -- - 14 t + 5 t 2 t t
In[7]:=	Conway[Knot[9, 38]][z]
Out[7]=	2 4 1 + 6 z + 5 z
In[8]:=	Select[AllKnots[], (alex === Alexander[#][t])&]
Out[8]=	{Knot[9, 38], Knot[10, 63]}
In[9]:=	{KnotDet[Knot[9, 38]], KnotSignature[Knot[9, 38]]}
Out[9]=	{57, -4}
In[10]:=	J=Jones[Knot[9, 38]][q]
Out[10]=	-11 3 6 8 10 10 8 7 3 -2 -q + --- - -- + -- - -- + -- - -- + -- - -- + q 10 9 8 7 6 5 4 3 q q q q q q q q
In[11]:=	Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&]
Out[11]=	{Knot[9, 38]}
In[12]:=	A2Invariant[Knot[9, 38]][q]
Out[12]=	-34 -32 -30 3 2 -22 2 4 -12 2 2 -q + q + q - --- - --- - q + --- + --- + q + --- - -- + 28 24 20 16 10 8 q q q q q q -6 q
In[13]:=	Kauffman[Knot[9, 38]][a, z]
Out[13]=	6 8 7 9 11 13 4 2 6 2 -4 a - 3 a + 3 a z + a z - a z + a z - a z + 9 a z + 8 2 10 2 12 2 5 3 7 3 9 3 10 a z + 3 a z + 3 a z - 2 a z - 2 a z + 5 a z + 11 3 13 3 4 4 6 4 8 4 10 4 3 a z - 2 a z + a z - 10 a z - 15 a z - 10 a z - 12 4 5 5 7 5 9 5 11 5 13 5 6 a z + 3 a z - 4 a z - 15 a z - 7 a z + a z + 6 6 8 6 10 6 12 6 7 7 9 7 6 a z + 6 a z + 3 a z + 3 a z + 5 a z + 9 a z + 11 7 8 8 10 8 4 a z + 2 a z + 2 a z
In[14]:=	{Vassiliev[2][Knot[9, 38]], Vassiliev[3][Knot[9, 38]]}
Out[14]=	{0, -14}
In[15]:=	Kh[Knot[9, 38]][q, t]
Out[15]=	-5 -3 1 2 1 4 2 4 q + q + ------ + ------ + ------ + ------ + ------ + ------ + 23 9 21 8 19 8 19 7 17 7 17 6 q t q t q t q t q t q t 4 6 4 4 6 4 4 3 ------ + ------ + ------ + ------ + ------ + ------ + ----- + ----- + 15 6 15 5 13 5 13 4 11 4 11 3 9 3 9 2 q t q t q t q t q t q t q t q t 4 3 ----- + ---- 7 2 5 q t q t