L11n49

L11n48

L11n50

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Link Presentations

[edit Notes on L11n49's Link Presentations]

Planar diagram presentation	X6172 X18,7,19,8 X4,19,1,20 X5,14,6,15 X8493 X9,16,10,17 X15,10,16,11 X11,20,12,21 X13,22,14,5 X21,12,22,13 X2,18,3,17
Gauss code	{1, -11, 5, -3}, {-4, -1, 2, -5, -6, 7, -8, 10, -9, 4, -7, 6, 11, -2, 3, 8, -10, 9}

A Braid Representative
A Morse Link Presentation

Polynomial invariants

Multivariable Alexander Polynomial (in $u$, $v$, $w$, ...)	$\frac{(u-1) (v-1) \left(v^4-v^3+v^2-v+1\right)}{\sqrt{u} v^{5/2}}$ (db)
Jones polynomial	$-\frac{7}{q^{9/2}}+\frac{4}{q^{7/2}}-\frac{4}{q^{5/2}}+\frac{2}{q^{3/2}}+\frac{2}{q^{19/2}}-\frac{3}{q^{17/2}}+\frac{5}{q^{15/2}}-\frac{6}{q^{13/2}}+\frac{6}{q^{11/2}}-\frac{1}{\sqrt{q}}$ (db)
Signature	-5 (db)
HOMFLY-PT polynomial	$a^9 (-z)-2 a^9 z^{-1} -a^7 z^5-2 a^7 z^3+3 a^7 z+4 a^7 z^{-1} +a^5 z^7+5 a^5 z^5+7 a^5 z^3+2 a^5 z-a^5 z^{-1} -a^3 z^5-4 a^3 z^3-4 a^3 z-a^3 z^{-1}$ (db)
Kauffman polynomial	$-3 z^2 a^{12}+2 a^{12}-z^5 a^{11}-z^3 a^{11}-z a^{11}-2 z^6 a^{10}+2 z^4 a^{10}-3 z^2 a^{10}+a^{10}-2 z^7 a^9+z^5 a^9+4 z^3 a^9-4 z a^9+2 a^9 z^{-1} -2 z^8 a^8+4 z^6 a^8-5 z^4 a^8+12 z^2 a^8-6 a^8-z^9 a^7+6 z^5 a^7-z^3 a^7-5 z a^7+4 a^7 z^{-1} -4 z^8 a^6+15 z^6 a^6-17 z^4 a^6+12 z^2 a^6-5 a^6-z^9 a^5+z^7 a^5+9 z^5 a^5-14 z^3 a^5+3 z a^5+a^5 z^{-1} -2 z^8 a^4+9 z^6 a^4-10 z^4 a^4+a^4-z^7 a^3+5 z^5 a^3-8 z^3 a^3+5 z a^3-a^3 z^{-1}$ (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   \ -7 -6 -5 -4 -3 -2 -1 0 1 2 χ 0                   1 1 -2                 1   -1 -4               3 1   2 -6             3 3     0 -8           4 1       3 -10         2 3         1 -12       4 4           0 -14     1 2             1 -16   2 4               -2 -18   1                 1 -20 2                   -2

Integral Khovanov Homology (db, data source)

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

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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