T(29,2)

Visit T(29,2)'s page at the original Knot Atlas!

Knot presentations

Planar diagram presentation	X_19,49,20,48 X_49,21,50,20 X_21,51,22,50 X_51,23,52,22 X_23,53,24,52 X_53,25,54,24 X_25,55,26,54 X_55,27,56,26 X_27,57,28,56 X_57,29,58,28 X_29,1,30,58 X_1,31,2,30 X_31,3,32,2 X_3,33,4,32 X_33,5,34,4 X_5,35,6,34 X_35,7,36,6 X_7,37,8,36 X_37,9,38,8 X_9,39,10,38 X_39,11,40,10 X_11,41,12,40 X_41,13,42,12 X_13,43,14,42 X_43,15,44,14 X_15,45,16,44 X_45,17,46,16 X_17,47,18,46 X_47,19,48,18
Gauss code	-12, 13, -14, 15, -16, 17, -18, 19, -20, 21, -22, 23, -24, 25, -26, 27, -28, 29, -1, 2, -3, 4, -5, 6, -7, 8, -9, 10, -11, 12, -13, 14, -15, 16, -17, 18, -19, 20, -21, 22, -23, 24, -25, 26, -27, 28, -29, 1, -2, 3, -4, 5, -6, 7, -8, 9, -10, 11
Dowker-Thistlethwaite code	30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 2 4 6 8 10 12 14 16 18 20 22 24 26 28
Conway Notation	Data:T(29,2)/Conway Notation

Knot presentations

Planar diagram presentation	X_19,49,20,48 X_49,21,50,20 X_21,51,22,50 X_51,23,52,22 X_23,53,24,52 X_53,25,54,24 X_25,55,26,54 X_55,27,56,26 X_27,57,28,56 X_57,29,58,28 X_29,1,30,58 X_1,31,2,30 X_31,3,32,2 X_3,33,4,32 X_33,5,34,4 X_5,35,6,34 X_35,7,36,6 X_7,37,8,36 X_37,9,38,8 X_9,39,10,38 X_39,11,40,10 X_11,41,12,40 X_41,13,42,12 X_13,43,14,42 X_43,15,44,14 X_15,45,16,44 X_45,17,46,16 X_17,47,18,46 X_47,19,48,18
Gauss code	$\{-12,13,-14,15,-16,17,-18,19,-20,21,-22,23,-24,25,-26,27,-28,29,-1,2,-3,4,-5,6,-7,8,-9,10,-11,12,-13,14,-15,16,-17,18,-19,20,-21,22,-23,24,-25,26,-27,28,-29,1,-2,3,-4,5,-6,7,-8,9,-10,11\}$
Dowker-Thistlethwaite code	30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 2 4 6 8 10 12 14 16 18 20 22 24 26 28

Polynomial invariants

Alexander polynomial	$t^{14}-t^{13}+t^{12}-t^{11}+t^{10}-t^{9}+t^{8}-t^{7}+t^{6}-t^{5}+t^{4}-t^{3}+t^{2}-t+1-t^{-1}+t^{-2}-t^{-3}+t^{-4}-t^{-5}+t^{-6}-t^{-7}+t^{-8}-t^{-9}+t^{-10}-t^{-11}+t^{-12}-t^{-13}+t^{-14}$
Conway polynomial	$z^{28}+27z^{26}+325z^{24}+2300z^{22}+10626z^{20}+33649z^{18}+74613z^{16}+116280z^{14}+125970z^{12}+92378z^{10}+43758z^{8}+12376z^{6}+1820z^{4}+105z^{2}+1$
2nd Alexander ideal (db, data sources)	$\{1\}$
Determinant and Signature	{ 29, 28 }
Jones polynomial	$-q^{43}+q^{42}-q^{41}+q^{40}-q^{39}+q^{38}-q^{37}+q^{36}-q^{35}+q^{34}-q^{33}+q^{32}-q^{31}+q^{30}-q^{29}+q^{28}-q^{27}+q^{26}-q^{25}+q^{24}-q^{23}+q^{22}-q^{21}+q^{20}-q^{19}+q^{18}-q^{17}+q^{16}+q^{14}$
HOMFLY-PT polynomial (db, data sources)	$z^{28}a^{-28}-28z^{26}a^{-28}-z^{26}a^{-30}+351z^{24}a^{-28}+26z^{24}a^{-30}-2600z^{22}a^{-28}-300z^{22}a^{-30}+12650z^{20}a^{-28}+2024z^{20}a^{-30}-42504z^{18}a^{-28}-8855z^{18}a^{-30}+100947z^{16}a^{-28}+26334z^{16}a^{-30}-170544z^{14}a^{-28}-54264z^{14}a^{-30}+203490z^{12}a^{-28}+77520z^{12}a^{-30}-167960z^{10}a^{-28}-75582z^{10}a^{-30}+92378z^{8}a^{-28}+48620z^{8}a^{-30}-31824z^{6}a^{-28}-19448z^{6}a^{-30}+6188z^{4}a^{-28}+4368z^{4}a^{-30}-560z^{2}a^{-28}-455z^{2}a^{-30}+15a^{-28}+14a^{-30}$
Kauffman polynomial (db, data sources)	$z^{28}a^{-28}+z^{28}a^{-30}+z^{27}a^{-29}+z^{27}a^{-31}-28z^{26}a^{-28}-27z^{26}a^{-30}+z^{26}a^{-32}-26z^{25}a^{-29}-25z^{25}a^{-31}+z^{25}a^{-33}+351z^{24}a^{-28}+326z^{24}a^{-30}-24z^{24}a^{-32}+z^{24}a^{-34}+300z^{23}a^{-29}+276z^{23}a^{-31}-23z^{23}a^{-33}+z^{23}a^{-35}-2600z^{22}a^{-28}-2324z^{22}a^{-30}+253z^{22}a^{-32}-22z^{22}a^{-34}+z^{22}a^{-36}-2024z^{21}a^{-29}-1771z^{21}a^{-31}+231z^{21}a^{-33}-21z^{21}a^{-35}+z^{21}a^{-37}+12650z^{20}a^{-28}+10879z^{20}a^{-30}-1540z^{20}a^{-32}+210z^{20}a^{-34}-20z^{20}a^{-36}+z^{20}a^{-38}+8855z^{19}a^{-29}+7315z^{19}a^{-31}-1330z^{19}a^{-33}+190z^{19}a^{-35}-19z^{19}a^{-37}+z^{19}a^{-39}-42504z^{18}a^{-28}-35189z^{18}a^{-30}+5985z^{18}a^{-32}-1140z^{18}a^{-34}+171z^{18}a^{-36}-18z^{18}a^{-38}+z^{18}a^{-40}-26334z^{17}a^{-29}-20349z^{17}a^{-31}+4845z^{17}a^{-33}-969z^{17}a^{-35}+153z^{17}a^{-37}-17z^{17}a^{-39}+z^{17}a^{-41}+100947z^{16}a^{-28}+80598z^{16}a^{-30}-15504z^{16}a^{-32}+3876z^{16}a^{-34}-816z^{16}a^{-36}+136z^{16}a^{-38}-16z^{16}a^{-40}+z^{16}a^{-42}+54264z^{15}a^{-29}+38760z^{15}a^{-31}-11628z^{15}a^{-33}+3060z^{15}a^{-35}-680z^{15}a^{-37}+120z^{15}a^{-39}-15z^{15}a^{-41}+z^{15}a^{-43}-170544z^{14}a^{-28}-131784z^{14}a^{-30}+27132z^{14}a^{-32}-8568z^{14}a^{-34}+2380z^{14}a^{-36}-560z^{14}a^{-38}+105z^{14}a^{-40}-14z^{14}a^{-42}+z^{14}a^{-44}-77520z^{13}a^{-29}-50388z^{13}a^{-31}+18564z^{13}a^{-33}-6188z^{13}a^{-35}+1820z^{13}a^{-37}-455z^{13}a^{-39}+91z^{13}a^{-41}-13z^{13}a^{-43}+z^{13}a^{-45}+203490z^{12}a^{-28}+153102z^{12}a^{-30}-31824z^{12}a^{-32}+12376z^{12}a^{-34}-4368z^{12}a^{-36}+1365z^{12}a^{-38}-364z^{12}a^{-40}+78z^{12}a^{-42}-12z^{12}a^{-44}+z^{12}a^{-46}+75582z^{11}a^{-29}+43758z^{11}a^{-31}-19448z^{11}a^{-33}+8008z^{11}a^{-35}-3003z^{11}a^{-37}+1001z^{11}a^{-39}-286z^{11}a^{-41}+66z^{11}a^{-43}-11z^{11}a^{-45}+z^{11}a^{-47}-167960z^{10}a^{-28}-124202z^{10}a^{-30}+24310z^{10}a^{-32}-11440z^{10}a^{-34}+5005z^{10}a^{-36}-2002z^{10}a^{-38}+715z^{10}a^{-40}-220z^{10}a^{-42}+55z^{10}a^{-44}-10z^{10}a^{-46}+z^{10}a^{-48}-48620z^{9}a^{-29}-24310z^{9}a^{-31}+12870z^{9}a^{-33}-6435z^{9}a^{-35}+3003z^{9}a^{-37}-1287z^{9}a^{-39}+495z^{9}a^{-41}-165z^{9}a^{-43}+45z^{9}a^{-45}-9z^{9}a^{-47}+z^{9}a^{-49}+92378z^{8}a^{-28}+68068z^{8}a^{-30}-11440z^{8}a^{-32}+6435z^{8}a^{-34}-3432z^{8}a^{-36}+1716z^{8}a^{-38}-792z^{8}a^{-40}+330z^{8}a^{-42}-120z^{8}a^{-44}+36z^{8}a^{-46}-8z^{8}a^{-48}+z^{8}a^{-50}+19448z^{7}a^{-29}+8008z^{7}a^{-31}-5005z^{7}a^{-33}+3003z^{7}a^{-35}-1716z^{7}a^{-37}+924z^{7}a^{-39}-462z^{7}a^{-41}+210z^{7}a^{-43}-84z^{7}a^{-45}+28z^{7}a^{-47}-7z^{7}a^{-49}+z^{7}a^{-51}-31824z^{6}a^{-28}-23816z^{6}a^{-30}+3003z^{6}a^{-32}-2002z^{6}a^{-34}+1287z^{6}a^{-36}-792z^{6}a^{-38}+462z^{6}a^{-40}-252z^{6}a^{-42}+126z^{6}a^{-44}-56z^{6}a^{-46}+21z^{6}a^{-48}-6z^{6}a^{-50}+z^{6}a^{-52}-4368z^{5}a^{-29}-1365z^{5}a^{-31}+1001z^{5}a^{-33}-715z^{5}a^{-35}+495z^{5}a^{-37}-330z^{5}a^{-39}+210z^{5}a^{-41}-126z^{5}a^{-43}+70z^{5}a^{-45}-35z^{5}a^{-47}+15z^{5}a^{-49}-5z^{5}a^{-51}+z^{5}a^{-53}+6188z^{4}a^{-28}+4823z^{4}a^{-30}-364z^{4}a^{-32}+286z^{4}a^{-34}-220z^{4}a^{-36}+165z^{4}a^{-38}-120z^{4}a^{-40}+84z^{4}a^{-42}-56z^{4}a^{-44}+35z^{4}a^{-46}-20z^{4}a^{-48}+10z^{4}a^{-50}-4z^{4}a^{-52}+z^{4}a^{-54}+455z^{3}a^{-29}+91z^{3}a^{-31}-78z^{3}a^{-33}+66z^{3}a^{-35}-55z^{3}a^{-37}+45z^{3}a^{-39}-36z^{3}a^{-41}+28z^{3}a^{-43}-21z^{3}a^{-45}+15z^{3}a^{-47}-10z^{3}a^{-49}+6z^{3}a^{-51}-3z^{3}a^{-53}+z^{3}a^{-55}-560z^{2}a^{-28}-469z^{2}a^{-30}+13z^{2}a^{-32}-12z^{2}a^{-34}+11z^{2}a^{-36}-10z^{2}a^{-38}+9z^{2}a^{-40}-8z^{2}a^{-42}+7z^{2}a^{-44}-6z^{2}a^{-46}+5z^{2}a^{-48}-4z^{2}a^{-50}+3z^{2}a^{-52}-2z^{2}a^{-54}+z^{2}a^{-56}-14za^{-29}-za^{-31}+za^{-33}-za^{-35}+za^{-37}-za^{-39}+za^{-41}-za^{-43}+za^{-45}-za^{-47}+za^{-49}-za^{-51}+za^{-53}-za^{-55}+za^{-57}+15a^{-28}+14a^{-30}$
The A2 invariant	Data:T(29,2)/QuantumInvariant/A2/1,0
The G2 invariant	Data:T(29,2)/QuantumInvariant/G2/1,0

Further Quantum Invariants

T(29,2) Quantum Invariants.

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.

In[3]:= K = Knot["T(29,2)"];

In[4]:= Alexander[K][t]

KnotTheory::loading: Loading precomputed data in PD4Knots`.

Out[4]= $t^{14}-t^{13}+t^{12}-t^{11}+t^{10}-t^{9}+t^{8}-t^{7}+t^{6}-t^{5}+t^{4}-t^{3}+t^{2}-t+1-t^{-1}+t^{-2}-t^{-3}+t^{-4}-t^{-5}+t^{-6}-t^{-7}+t^{-8}-t^{-9}+t^{-10}-t^{-11}+t^{-12}-t^{-13}+t^{-14}$

In[5]:= Conway[K][z]

Out[5]= $z^{28}+27z^{26}+325z^{24}+2300z^{22}+10626z^{20}+33649z^{18}+74613z^{16}+116280z^{14}+125970z^{12}+92378z^{10}+43758z^{8}+12376z^{6}+1820z^{4}+105z^{2}+1$

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]= { 29, 28 }

In[8]:= Jones[K][q]

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

Out[8]= $-q^{43}+q^{42}-q^{41}+q^{40}-q^{39}+q^{38}-q^{37}+q^{36}-q^{35}+q^{34}-q^{33}+q^{32}-q^{31}+q^{30}-q^{29}+q^{28}-q^{27}+q^{26}-q^{25}+q^{24}-q^{23}+q^{22}-q^{21}+q^{20}-q^{19}+q^{18}-q^{17}+q^{16}+q^{14}$

In[9]:= HOMFLYPT[K][a, z]

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

Out[9]= $z^{28}a^{-28}-28z^{26}a^{-28}-z^{26}a^{-30}+351z^{24}a^{-28}+26z^{24}a^{-30}-2600z^{22}a^{-28}-300z^{22}a^{-30}+12650z^{20}a^{-28}+2024z^{20}a^{-30}-42504z^{18}a^{-28}-8855z^{18}a^{-30}+100947z^{16}a^{-28}+26334z^{16}a^{-30}-170544z^{14}a^{-28}-54264z^{14}a^{-30}+203490z^{12}a^{-28}+77520z^{12}a^{-30}-167960z^{10}a^{-28}-75582z^{10}a^{-30}+92378z^{8}a^{-28}+48620z^{8}a^{-30}-31824z^{6}a^{-28}-19448z^{6}a^{-30}+6188z^{4}a^{-28}+4368z^{4}a^{-30}-560z^{2}a^{-28}-455z^{2}a^{-30}+15a^{-28}+14a^{-30}$

In[10]:= Kauffman[K][a, z]

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

Out[10]= $z^{28}a^{-28}+z^{28}a^{-30}+z^{27}a^{-29}+z^{27}a^{-31}-28z^{26}a^{-28}-27z^{26}a^{-30}+z^{26}a^{-32}-26z^{25}a^{-29}-25z^{25}a^{-31}+z^{25}a^{-33}+351z^{24}a^{-28}+326z^{24}a^{-30}-24z^{24}a^{-32}+z^{24}a^{-34}+300z^{23}a^{-29}+276z^{23}a^{-31}-23z^{23}a^{-33}+z^{23}a^{-35}-2600z^{22}a^{-28}-2324z^{22}a^{-30}+253z^{22}a^{-32}-22z^{22}a^{-34}+z^{22}a^{-36}-2024z^{21}a^{-29}-1771z^{21}a^{-31}+231z^{21}a^{-33}-21z^{21}a^{-35}+z^{21}a^{-37}+12650z^{20}a^{-28}+10879z^{20}a^{-30}-1540z^{20}a^{-32}+210z^{20}a^{-34}-20z^{20}a^{-36}+z^{20}a^{-38}+8855z^{19}a^{-29}+7315z^{19}a^{-31}-1330z^{19}a^{-33}+190z^{19}a^{-35}-19z^{19}a^{-37}+z^{19}a^{-39}-42504z^{18}a^{-28}-35189z^{18}a^{-30}+5985z^{18}a^{-32}-1140z^{18}a^{-34}+171z^{18}a^{-36}-18z^{18}a^{-38}+z^{18}a^{-40}-26334z^{17}a^{-29}-20349z^{17}a^{-31}+4845z^{17}a^{-33}-969z^{17}a^{-35}+153z^{17}a^{-37}-17z^{17}a^{-39}+z^{17}a^{-41}+100947z^{16}a^{-28}+80598z^{16}a^{-30}-15504z^{16}a^{-32}+3876z^{16}a^{-34}-816z^{16}a^{-36}+136z^{16}a^{-38}-16z^{16}a^{-40}+z^{16}a^{-42}+54264z^{15}a^{-29}+38760z^{15}a^{-31}-11628z^{15}a^{-33}+3060z^{15}a^{-35}-680z^{15}a^{-37}+120z^{15}a^{-39}-15z^{15}a^{-41}+z^{15}a^{-43}-170544z^{14}a^{-28}-131784z^{14}a^{-30}+27132z^{14}a^{-32}-8568z^{14}a^{-34}+2380z^{14}a^{-36}-560z^{14}a^{-38}+105z^{14}a^{-40}-14z^{14}a^{-42}+z^{14}a^{-44}-77520z^{13}a^{-29}-50388z^{13}a^{-31}+18564z^{13}a^{-33}-6188z^{13}a^{-35}+1820z^{13}a^{-37}-455z^{13}a^{-39}+91z^{13}a^{-41}-13z^{13}a^{-43}+z^{13}a^{-45}+203490z^{12}a^{-28}+153102z^{12}a^{-30}-31824z^{12}a^{-32}+12376z^{12}a^{-34}-4368z^{12}a^{-36}+1365z^{12}a^{-38}-364z^{12}a^{-40}+78z^{12}a^{-42}-12z^{12}a^{-44}+z^{12}a^{-46}+75582z^{11}a^{-29}+43758z^{11}a^{-31}-19448z^{11}a^{-33}+8008z^{11}a^{-35}-3003z^{11}a^{-37}+1001z^{11}a^{-39}-286z^{11}a^{-41}+66z^{11}a^{-43}-11z^{11}a^{-45}+z^{11}a^{-47}-167960z^{10}a^{-28}-124202z^{10}a^{-30}+24310z^{10}a^{-32}-11440z^{10}a^{-34}+5005z^{10}a^{-36}-2002z^{10}a^{-38}+715z^{10}a^{-40}-220z^{10}a^{-42}+55z^{10}a^{-44}-10z^{10}a^{-46}+z^{10}a^{-48}-48620z^{9}a^{-29}-24310z^{9}a^{-31}+12870z^{9}a^{-33}-6435z^{9}a^{-35}+3003z^{9}a^{-37}-1287z^{9}a^{-39}+495z^{9}a^{-41}-165z^{9}a^{-43}+45z^{9}a^{-45}-9z^{9}a^{-47}+z^{9}a^{-49}+92378z^{8}a^{-28}+68068z^{8}a^{-30}-11440z^{8}a^{-32}+6435z^{8}a^{-34}-3432z^{8}a^{-36}+1716z^{8}a^{-38}-792z^{8}a^{-40}+330z^{8}a^{-42}-120z^{8}a^{-44}+36z^{8}a^{-46}-8z^{8}a^{-48}+z^{8}a^{-50}+19448z^{7}a^{-29}+8008z^{7}a^{-31}-5005z^{7}a^{-33}+3003z^{7}a^{-35}-1716z^{7}a^{-37}+924z^{7}a^{-39}-462z^{7}a^{-41}+210z^{7}a^{-43}-84z^{7}a^{-45}+28z^{7}a^{-47}-7z^{7}a^{-49}+z^{7}a^{-51}-31824z^{6}a^{-28}-23816z^{6}a^{-30}+3003z^{6}a^{-32}-2002z^{6}a^{-34}+1287z^{6}a^{-36}-792z^{6}a^{-38}+462z^{6}a^{-40}-252z^{6}a^{-42}+126z^{6}a^{-44}-56z^{6}a^{-46}+21z^{6}a^{-48}-6z^{6}a^{-50}+z^{6}a^{-52}-4368z^{5}a^{-29}-1365z^{5}a^{-31}+1001z^{5}a^{-33}-715z^{5}a^{-35}+495z^{5}a^{-37}-330z^{5}a^{-39}+210z^{5}a^{-41}-126z^{5}a^{-43}+70z^{5}a^{-45}-35z^{5}a^{-47}+15z^{5}a^{-49}-5z^{5}a^{-51}+z^{5}a^{-53}+6188z^{4}a^{-28}+4823z^{4}a^{-30}-364z^{4}a^{-32}+286z^{4}a^{-34}-220z^{4}a^{-36}+165z^{4}a^{-38}-120z^{4}a^{-40}+84z^{4}a^{-42}-56z^{4}a^{-44}+35z^{4}a^{-46}-20z^{4}a^{-48}+10z^{4}a^{-50}-4z^{4}a^{-52}+z^{4}a^{-54}+455z^{3}a^{-29}+91z^{3}a^{-31}-78z^{3}a^{-33}+66z^{3}a^{-35}-55z^{3}a^{-37}+45z^{3}a^{-39}-36z^{3}a^{-41}+28z^{3}a^{-43}-21z^{3}a^{-45}+15z^{3}a^{-47}-10z^{3}a^{-49}+6z^{3}a^{-51}-3z^{3}a^{-53}+z^{3}a^{-55}-560z^{2}a^{-28}-469z^{2}a^{-30}+13z^{2}a^{-32}-12z^{2}a^{-34}+11z^{2}a^{-36}-10z^{2}a^{-38}+9z^{2}a^{-40}-8z^{2}a^{-42}+7z^{2}a^{-44}-6z^{2}a^{-46}+5z^{2}a^{-48}-4z^{2}a^{-50}+3z^{2}a^{-52}-2z^{2}a^{-54}+z^{2}a^{-56}-14za^{-29}-za^{-31}+za^{-33}-za^{-35}+za^{-37}-za^{-39}+za^{-41}-za^{-43}+za^{-45}-za^{-47}+za^{-49}-za^{-51}+za^{-53}-za^{-55}+za^{-57}+15a^{-28}+14a^{-30}$

Vassiliev invariants

V₂ and V₃:

(105, 1015)

V_2,1 through V_6,9:

V_2,1

V_3,1

V_4,1

V_4,2

V_4,3

V_5,1

V_5,2

V_5,3

V_5,4

V_6,1

V_6,2

V_6,3

V_6,4

V_6,5

V_6,6

V_6,7

V_6,8

V_6,9

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 $s=$ 28 is the signature of T(29,2). Nonzero entries off the critical diagonals (if any exist) are highlighted in red.

\		r
	\
j		\

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

χ

87

1

-1

85

0

83

1

0

81

0

79

1

0

77

0

75

1

0

73

0

71

1

0

69

0

67

1

0

65

0

63

1

0

61

0

59

1

0

57

0

55

1

0

53

0

51

1

0

49

0

47

1

0

45

0

43

1

0

41

0

39

1

0

37

0

35

1

0

33

0

31

1

29

1

27

1

Computer Talk

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

In[1]:=	<< KnotTheory`
Loading KnotTheory` (version of August 17, 2005, 14:44:34)...
In[2]:=	Crossings[TorusKnot[29, 2]]
Out[2]=	29
In[3]:=	PD[TorusKnot[29, 2]]
Out[3]=	PD[X[19, 49, 20, 48], X[49, 21, 50, 20], X[21, 51, 22, 50], X[51, 23, 52, 22], X[23, 53, 24, 52], X[53, 25, 54, 24], X[25, 55, 26, 54], X[55, 27, 56, 26], X[27, 57, 28, 56], X[57, 29, 58, 28], X[29, 1, 30, 58], X[1, 31, 2, 30], X[31, 3, 32, 2], X[3, 33, 4, 32], X[33, 5, 34, 4], X[5, 35, 6, 34], X[35, 7, 36, 6], X[7, 37, 8, 36], X[37, 9, 38, 8], X[9, 39, 10, 38], X[39, 11, 40, 10], X[11, 41, 12, 40], X[41, 13, 42, 12], X[13, 43, 14, 42], X[43, 15, 44, 14], X[15, 45, 16, 44], X[45, 17, 46, 16], X[17, 47, 18, 46], X[47, 19, 48, 18]]
In[4]:=	GaussCode[TorusKnot[29, 2]]
Out[4]=	GaussCode[-12, 13, -14, 15, -16, 17, -18, 19, -20, 21, -22, 23, -24, 25, -26, 27, -28, 29, -1, 2, -3, 4, -5, 6, -7, 8, -9, 10, -11, 12, -13, 14, -15, 16, -17, 18, -19, 20, -21, 22, -23, 24, -25, 26, -27, 28, -29, 1, -2, 3, -4, 5, -6, 7, -8, 9, -10, 11]
In[5]:=	BR[TorusKnot[29, 2]]
Out[5]=	BR[2, {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}]
In[6]:=	alex = Alexander[TorusKnot[29, 2]][t]
Out[6]=	-14 -13 -12 -11 -10 -9 -8 -7 -6 -5 1 + t - t + t - t + t - t + t - t + t - t + -4 -3 -2 1 2 3 4 5 6 7 8 9 t - t + t - - - t + t - t + t - t + t - t + t - t + t 10 11 12 13 14 t - t + t - t + t
In[7]:=	Conway[TorusKnot[29, 2]][z]
Out[7]=	2 4 6 8 10 12 1 + 105 z + 1820 z + 12376 z + 43758 z + 92378 z + 125970 z + 14 16 18 20 22 24 116280 z + 74613 z + 33649 z + 10626 z + 2300 z + 325 z + 26 28 27 z + z
In[8]:=	Select[AllKnots[], (alex === Alexander[#][t])&]
Out[8]=	{}
In[9]:=	{KnotDet[TorusKnot[29, 2]], KnotSignature[TorusKnot[29, 2]]}
Out[9]=	{29, 28}
In[10]:=	J=Jones[TorusKnot[29, 2]][q]
Out[10]=	14 16 17 18 19 20 21 22 23 24 25 26 q + q - q + q - q + q - q + q - q + q - q + q - 27 28 29 30 31 32 33 34 35 36 37 q + q - q + q - q + q - q + q - q + q - q + 38 39 40 41 42 43 q - q + q - q + q - q
In[11]:=	Select[AllKnots[], (J === Jones[#][q] \|\| (J /. q-> 1/q) === Jones[#][q])&]
Out[11]=	{}
In[12]:=	A2Invariant[TorusKnot[29, 2]][q]
Out[12]=	NotAvailable
In[13]:=	Kauffman[TorusKnot[29, 2]][a, z]
Out[13]=	NotAvailable
In[14]:=	{Vassiliev[2][TorusKnot[29, 2]], Vassiliev[3][TorusKnot[29, 2]]}
Out[14]=	{0, 1015}
In[15]:=	Kh[TorusKnot[29, 2]][q, t]
Out[15]=	27 29 31 2 35 3 35 4 39 5 39 6 43 7 q + q + q t + q t + q t + q t + q t + q t + 43 8 47 9 47 10 51 11 51 12 55 13 55 14 q t + q t + q t + q t + q t + q t + q t + 59 15 59 16 63 17 63 18 67 19 67 20 71 21 q t + q t + q t + q t + q t + q t + q t + 71 22 75 23 75 24 79 25 79 26 83 27 83 28 q t + q t + q t + q t + q t + q t + q t + 87 29 q t

T(29,2)

Contents

Knot presentations

Knot presentations

Polynomial invariants

Vassiliev invariants

Khovanov Homology

Computer Talk

Navigation menu

Page actions

Page actions

Personal tools

Navigation

Search

Tools