10 27
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Visit 10 27's page at the Knot Server (KnotPlot driven, includes 3D interactive images!)
Visit 10 27's page at Knotilus! Visit 10 27's page at the original Knot Atlas! |
10 27 Quick Notes |
Knot presentations
Planar diagram presentation | X4251 X12,4,13,3 X20,13,1,14 X14,5,15,6 X6,19,7,20 X18,9,19,10 X16,7,17,8 X8,17,9,18 X10,15,11,16 X2,12,3,11 |
Gauss code | 1, -10, 2, -1, 4, -5, 7, -8, 6, -9, 10, -2, 3, -4, 9, -7, 8, -6, 5, -3 |
Dowker-Thistlethwaite code | 4 12 14 16 18 2 20 10 8 6 |
Conway Notation | [321112] |
Three dimensional invariants
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Four dimensional invariants
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Polynomial invariants
A1 Invariants.
Weight | Invariant |
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1 | |
2 | |
3 | |
4 | |
5 | Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle -q^{225}+2 q^{223}+q^{221}-3 q^{219}-q^{213}+4 q^{211}+5 q^{209}-8 q^{207}-9 q^{205}+2 q^{203}+8 q^{201}+18 q^{199}+11 q^{197}-22 q^{195}-52 q^{193}-27 q^{191}+46 q^{189}+100 q^{187}+81 q^{185}-47 q^{183}-197 q^{181}-209 q^{179}+14 q^{177}+323 q^{175}+420 q^{173}+134 q^{171}-413 q^{169}-756 q^{167}-468 q^{165}+403 q^{163}+1157 q^{161}+1012 q^{159}-140 q^{157}-1494 q^{155}-1785 q^{153}-463 q^{151}+1622 q^{149}+2652 q^{147}+1415 q^{145}-1357 q^{143}-3394 q^{141}-2665 q^{139}+621 q^{137}+3830 q^{135}+3964 q^{133}+516 q^{131}-3746 q^{129}-5056 q^{127}-1930 q^{125}+3156 q^{123}+5727 q^{121}+3304 q^{119}-2140 q^{117}-5816 q^{115}-4414 q^{113}+895 q^{111}+5379 q^{109}+5066 q^{107}+328 q^{105}-4528 q^{103}-5210 q^{101}-1351 q^{99}+3432 q^{97}+4936 q^{95}+2093 q^{93}-2306 q^{91}-4367 q^{89}-2550 q^{87}+1242 q^{85}+3658 q^{83}+2838 q^{81}-284 q^{79}-2964 q^{77}-3032 q^{75}-594 q^{73}+2291 q^{71}+3251 q^{69}+1472 q^{67}-1657 q^{65}-3511 q^{63}-2387 q^{61}+967 q^{59}+3766 q^{57}+3378 q^{55}-154 q^{53}-3890 q^{51}-4390 q^{49}-844 q^{47}+3782 q^{45}+5257 q^{43}+1987 q^{41}-3270 q^{39}-5835 q^{37}-3212 q^{35}+2406 q^{33}+5936 q^{31}+4234 q^{29}-1168 q^{27}-5475 q^{25}-4935 q^{23}-182 q^{21}+4512 q^{19}+5098 q^{17}+1384 q^{15}-3165 q^{13}-4701 q^{11}-2265 q^9+1751 q^7+3884 q^5+2613 q^3-514 q-2766 q^{-1} -2529 q^{-3} -364 q^{-5} +1708 q^{-7} +2072 q^{-9} +809 q^{-11} -805 q^{-13} -1487 q^{-15} -902 q^{-17} +225 q^{-19} +909 q^{-21} +769 q^{-23} +92 q^{-25} -486 q^{-27} -543 q^{-29} -187 q^{-31} +195 q^{-33} +335 q^{-35} +184 q^{-37} -66 q^{-39} -181 q^{-41} -121 q^{-43} +3 q^{-45} +81 q^{-47} +78 q^{-49} +11 q^{-51} -40 q^{-53} -36 q^{-55} -5 q^{-57} +13 q^{-59} +14 q^{-61} +8 q^{-63} -7 q^{-65} -10 q^{-67} +2 q^{-69} +4 q^{-71} -3 q^{-79} + q^{-81} +2 q^{-83} - q^{-85} } |
A2 Invariants.
Weight | Invariant |
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1,0 | |
1,1 | |
2,0 |
A3 Invariants.
Weight | Invariant |
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0,1,0 | |
1,0,0 |
A4 Invariants.
Weight | Invariant |
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0,1,0,0 | |
1,0,0,0 |
B2 Invariants.
Weight | Invariant |
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0,1 | |
1,0 |
D4 Invariants.
Weight | Invariant |
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1,0,0,0 |
G2 Invariants.
Weight | Invariant |
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1,0 |
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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]:=
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AppendTo[$Path, "C:/drorbn/projects/KAtlas/"];
<< KnotTheory`
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Loading KnotTheory` version of August 31, 2006, 11:25:27.5625.
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In[3]:=
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K = Knot["10 27"];
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In[4]:=
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Alexander[K][t]
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KnotTheory::loading: Loading precomputed data in PD4Knots`.
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Out[4]=
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In[5]:=
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Conway[K][z]
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Out[5]=
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In[6]:=
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Alexander[K, 2][t]
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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.
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Out[6]=
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In[7]:=
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{KnotDet[K], KnotSignature[K]}
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Out[7]=
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{ 71, -2 } |
In[8]:=
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Jones[K][q]
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KnotTheory::loading: Loading precomputed data in Jones4Knots`.
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Out[8]=
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In[9]:=
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HOMFLYPT[K][a, z]
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KnotTheory::credits: The HOMFLYPT program was written by Scott Morrison.
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Out[9]=
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In[10]:=
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Kauffman[K][a, z]
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KnotTheory::loading: Loading precomputed data in Kauffman4Knots`.
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Out[10]=
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Vassiliev invariants
V2 and V3: | (2, -3) |
V2,1 through V6,9: |
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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 -2 is the signature of 10 27. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.
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-7 | -6 | -5 | -4 | -3 | -2 | -1 | 0 | 1 | 2 | 3 | χ | |||||||||
5 | 1 | -1 | |||||||||||||||||||
3 | 2 | 2 | |||||||||||||||||||
1 | 3 | 1 | -2 | ||||||||||||||||||
-1 | 6 | 2 | 4 | ||||||||||||||||||
-3 | 6 | 4 | -2 | ||||||||||||||||||
-5 | 6 | 5 | 1 | ||||||||||||||||||
-7 | 5 | 6 | 1 | ||||||||||||||||||
-9 | 4 | 6 | -2 | ||||||||||||||||||
-11 | 2 | 5 | 3 | ||||||||||||||||||
-13 | 1 | 4 | -3 | ||||||||||||||||||
-15 | 2 | 2 | |||||||||||||||||||
-17 | 1 | -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[Knot[10, 27]] |
Out[2]= | 10 |
In[3]:= | PD[Knot[10, 27]] |
Out[3]= | PD[X[4, 2, 5, 1], X[12, 4, 13, 3], X[20, 13, 1, 14], X[14, 5, 15, 6],X[6, 19, 7, 20], X[18, 9, 19, 10], X[16, 7, 17, 8], X[8, 17, 9, 18],X[10, 15, 11, 16], X[2, 12, 3, 11]] |
In[4]:= | GaussCode[Knot[10, 27]] |
Out[4]= | GaussCode[1, -10, 2, -1, 4, -5, 7, -8, 6, -9, 10, -2, 3, -4, 9, -7, 8, -6, 5, -3] |
In[5]:= | BR[Knot[10, 27]] |
Out[5]= | BR[4, {-1, -1, -1, -1, -2, 1, -2, 3, -2, 3, 3}] |
In[6]:= | alex = Alexander[Knot[10, 27]][t] |
Out[6]= | 2 8 16 2 3 |
In[7]:= | Conway[Knot[10, 27]][z] |
Out[7]= | 2 4 6 1 + 2 z + 4 z + 2 z |
In[8]:= | Select[AllKnots[], (alex === Alexander[#][t])&] |
Out[8]= | {Knot[10, 27]} |
In[9]:= | {KnotDet[Knot[10, 27]], KnotSignature[Knot[10, 27]]} |
Out[9]= | {71, -2} |
In[10]:= | J=Jones[Knot[10, 27]][q] |
Out[10]= | -8 3 6 9 11 12 11 9 2 |
In[11]:= | Select[AllKnots[], (J === Jones[#][q] || (J /. q-> 1/q) === Jones[#][q])&] |
Out[11]= | {Knot[10, 27]} |
In[12]:= | A2Invariant[Knot[10, 27]][q] |
Out[12]= | -24 -22 -20 -18 2 2 2 2 2 3 4 6 |
In[13]:= | Kauffman[Knot[10, 27]][a, z] |
Out[13]= | 2 4 6 3 5 9 2 2 2 |
In[14]:= | {Vassiliev[2][Knot[10, 27]], Vassiliev[3][Knot[10, 27]]} |
Out[14]= | {0, -3} |
In[15]:= | Kh[Knot[10, 27]][q, t] |
Out[15]= | 4 6 1 2 1 4 2 5 4 |