L11n121

L11n120

L11n122

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Link Presentations

[edit Notes on L11n121's Link Presentations]

Planar diagram presentation	X6172 X14,3,15,4 X16,10,17,9 X11,21,12,20 X21,9,22,8 X7,19,8,18 X19,13,20,12 X10,16,11,15 X17,5,18,22 X2536 X4,13,1,14
Gauss code	{1, -10, 2, -11}, {10, -1, -6, 5, 3, -8, -4, 7, 11, -2, 8, -3, -9, 6, -7, 4, -5, 9}

A Braid Representative
A Morse Link Presentation

Polynomial invariants

Multivariable Alexander Polynomial (in $u$, $v$, $w$, ...)	$-\frac{-u v^4+2 u v^3-2 u v^2+u v+u+v^5+v^4-2 v^3+2 v^2-v}{\sqrt{u} v^{5/2}}$ (db)
Jones polynomial	$-q^{13/2}+3 q^{11/2}-3 q^{9/2}+4 q^{7/2}-4 q^{5/2}+3 q^{3/2}-3 \sqrt{q}-\frac{1}{q^{5/2}}$ (db)
Signature	1 (db)
HOMFLY-PT polynomial	$-z^3 a^{-5} -z a^{-5} +z^5 a^{-3} +4 z^3 a^{-3} +6 z a^{-3} +2 a^{-3} z^{-1} -z^5 a^{-1} +a z^3-7 z^3 a^{-1} +4 a z-11 z a^{-1} +3 a z^{-1} -5 a^{-1} z^{-1}$ (db)
Kauffman polynomial	$-a z^7-z^7 a^{-3} -2 z^7 a^{-5} -z^6 a^{-2} -4 z^6 a^{-4} -3 z^6 a^{-6} +7 a z^5+3 z^5 a^{-1} +2 z^5 a^{-3} +5 z^5 a^{-5} -z^5 a^{-7} +4 z^4 a^{-2} +10 z^4 a^{-4} +9 z^4 a^{-6} +3 z^4-14 a z^3-14 z^3 a^{-1} -4 z^3 a^{-3} -2 z^3 a^{-5} +2 z^3 a^{-7} -10 z^2 a^{-2} -5 z^2 a^{-4} -4 z^2 a^{-6} -9 z^2+10 a z+14 z a^{-1} +5 z a^{-3} +z a^{-5} +5 a^{-2} - a^{-6} +5-3 a z^{-1} -5 a^{-1} z^{-1} -2 a^{-3} z^{-1}$ (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 5 6 χ 14                     1 1 12                   2   -2 10                 1 1   0 8               3 2     -1 6           1 2 1       0 4           2 3         1 2       1 3 2           0 0         3             3 -2     1 1               0 -4 1                     1 -6 1                     1

Integral Khovanov Homology (db, data source)

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

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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