L10n8

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Link Presentations

[edit Notes on L10n8's Link Presentations]

Planar diagram presentation	X6172 X16,7,17,8 X17,1,18,4 X9,14,10,15 X3849 X5,11,6,10 X11,5,12,20 X13,19,14,18 X19,13,20,12 X2,16,3,15
Gauss code	{1, -10, -5, 3}, {-6, -1, 2, 5, -4, 6, -7, 9, -8, 4, 10, -2, -3, 8, -9, 7}

A Braid Representative
A Morse Link Presentation

Polynomial invariants

Multivariable Alexander Polynomial (in $u$, $v$, $w$, ...)	$-\frac{2 (u-1) (v-1)}{\sqrt{u} \sqrt{v}}$ (db)
Jones polynomial	$-q^{9/2}+q^{7/2}-\frac{1}{q^{7/2}}-2 q^{5/2}+\frac{1}{q^{5/2}}+3 q^{3/2}-\frac{2}{q^{3/2}}-3 \sqrt{q}+\frac{2}{\sqrt{q}}$ (db)
Signature	1 (db)
HOMFLY-PT polynomial	$z a^3+a^3 z^{-1} -z^3 a-2 z a-a z^{-1} -z^3 a^{-1} -z a^{-1} - a^{-1} z^{-1} +2 z a^{-3} +2 a^{-3} z^{-1} - a^{-5} z^{-1}$ (db)
Kauffman polynomial	$z^3 a^{-5} -3 z a^{-5} + a^{-5} z^{-1} +z^4 a^{-4} -2 z^2 a^{-4} + a^{-4} +z^7 a^{-3} +a^3 z^5-6 z^5 a^{-3} -4 a^3 z^3+14 z^3 a^{-3} +3 a^3 z-11 z a^{-3} -a^3 z^{-1} +2 a^{-3} z^{-1} +z^8 a^{-2} +a^2 z^6-6 z^6 a^{-2} -3 a^2 z^4+13 z^4 a^{-2} -9 z^2 a^{-2} +a^2+3 a^{-2} +a z^7+2 z^7 a^{-1} -3 a z^5-10 z^5 a^{-1} +17 z^3 a^{-1} +3 a z-8 z a^{-1} -a z^{-1} + a^{-1} z^{-1} +z^8-5 z^6+9 z^4-7 z^2+2$ (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   \ -4 -3 -2 -1 0 1 2 3 4 χ 10                 1 1 8                   0 6             2 1   1 4           1       -1 2         2 2       0 0       2 3         1 -2       1 1         0 -4   1 2             1 -6                   0 -8 1                 1

Integral Khovanov Homology (db, data source)

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

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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