L11n253

L11n252

L11n254

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Link Presentations

[edit Notes on L11n253's Link Presentations]

Planar diagram presentation	X12,1,13,2 X14,3,15,4 X9,18,10,19 X5,16,6,17 X22,7,11,8 X6,21,7,22 X20,15,21,16 X17,8,18,9 X19,4,20,5 X2,11,3,12 X10,13,1,14
Gauss code	{1, -10, 2, 9, -4, -6, 5, 8, -3, -11}, {10, -1, 11, -2, 7, 4, -8, 3, -9, -7, 6, -5}

A Braid Representative
A Morse Link Presentation

Polynomial invariants

Multivariable Alexander Polynomial (in $u$, $v$, $w$, ...)	$\frac{u^4 \left(-v^3\right)-u^3 v^4+u^3 v^3-u^3 v-u^2 v^2-u v^3+u v-u-v}{u^2 v^2}$ (db)
Jones polynomial	$\frac{1}{q^{9/2}}-\frac{1}{q^{7/2}}-\frac{1}{q^{25/2}}+\frac{1}{q^{17/2}}-\frac{1}{q^{15/2}}+\frac{1}{q^{13/2}}-\frac{2}{q^{11/2}}$ (db)
Signature	-7 (db)
HOMFLY-PT polynomial	$-z a^{13}+z^5 a^{11}+6 z^3 a^{11}+7 z a^{11}+a^{11} z^{-1} -z^7 a^9-6 z^5 a^9-10 z^3 a^9-6 z a^9-a^9 z^{-1} -z^7 a^7-6 z^5 a^7-10 z^3 a^7-5 z a^7$ (db)
Kauffman polynomial	$a^{15} z^5-5 a^{15} z^3+5 a^{15} z-a^{14} z^2-2 a^{13} z^3+2 a^{13} z+a^{12} z^8-7 a^{12} z^6+14 a^{12} z^4-10 a^{12} z^2+a^{11} z^9-7 a^{11} z^7+16 a^{11} z^5-18 a^{11} z^3+9 a^{11} z-a^{11} z^{-1} +2 a^{10} z^8-12 a^{10} z^6+19 a^{10} z^4-9 a^{10} z^2+a^{10}+a^9 z^9-6 a^9 z^7+11 a^9 z^5-11 a^9 z^3+7 a^9 z-a^9 z^{-1} +a^8 z^8-5 a^8 z^6+5 a^8 z^4+a^7 z^7-6 a^7 z^5+10 a^7 z^3-5 a^7 z$ (db)

Khovanov Homology

The coefficients of the monomials $t^rq^j$ are shown, along with their alternating sums $\chi$ (fixed $j$, alternation over $r$).

\   r    \    j   \ -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 χ -6                     1 1 -8                   1 1 0 -10                 1     1 -12             1 1 1     1 -14           1 2 1       0 -16           1 1         0 -18       1 2 2           -1 -20                       0 -22     1 1               0 -24 1                     1 -26 1                     1

Integral Khovanov Homology (db, data source)

$\dim{\mathcal G}_{2r+i}\operatorname{KH}^r_{\mathbb Z}$ $i=-8$ $i=-6$ $i=-4$ $r=-10$ ${\mathbb Z}$ ${\mathbb Z}$ $r=-9$ $r=-8$ ${\mathbb Z}$ $r=-7$ ${\mathbb Z}$ ${\mathbb Z}_2$ ${\mathbb Z}$ $r=-6$ ${\mathbb Z}_2$ ${\mathbb Z}^{2}$ $r=-5$ ${\mathbb Z}^{2}$ ${\mathbb Z}\oplus{\mathbb Z}_2$ ${\mathbb Z}$ $r=-4$ ${\mathbb Z}\oplus{\mathbb Z}_2$ ${\mathbb Z}^{2}$ ${\mathbb Z}$ $r=-3$ ${\mathbb Z}\oplus{\mathbb Z}_2$ ${\mathbb Z}$ $r=-2$ ${\mathbb Z}\oplus{\mathbb Z}_2$ ${\mathbb Z}$ $r=-1$ ${\mathbb Z}_2$ ${\mathbb Z}$ $r=0$ ${\mathbb Z}$ ${\mathbb Z}$

Computer Talk

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

Modifying This Page

Read me first: Modifying Knot Pages See/edit the Link Page master template (intermediate). See/edit the Link_Splice_Base (expert). Back to the top.

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