L11n315

L11n314

L11n316

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Link Presentations

[edit Notes on L11n315's Link Presentations]

Planar diagram presentation	X6172 X12,4,13,3 X7,17,8,16 X9,20,10,21 X11,18,12,19 X19,22,20,11 X15,9,16,8 X21,10,22,5 X17,14,18,15 X2536 X4,14,1,13
Gauss code	{1, -10, 2, -11}, {10, -1, -3, 7, -4, 8}, {-5, -2, 11, 9, -7, 3, -9, 5, -6, 4, -8, 6}

A Braid Representative
A Morse Link Presentation

Polynomial invariants

Multivariable Alexander Polynomial (in $u$, $v$, $w$, ...)	$\frac{t(1) t(2)^2-t(1) t(3) t(2)^2-t(3) t(2)^2+t(2)^2+t(1) t(3)^2 t(2)+t(3)^2 t(2)-t(1) t(2)-t(1) t(3) t(2)+t(3) t(2)-t(2)-t(1) t(3)^2-t(3)^2+t(1) t(3)+t(3)}{\sqrt{t(1)} t(2) t(3)}$ (db)
Jones polynomial	$- q^{-7} +2 q^{-6} -2 q^{-5} +2 q^{-4} +q^3- q^{-3} -q^2+ q^{-2} +2 q+ q^{-1}$ (db)
Signature	0 (db)
HOMFLY-PT polynomial	$a^6 \left(-z^2\right)-a^6+a^4 z^4+3 a^4 z^2+2 a^4+a^2 z^{-2} +z^2 a^{-2} + a^{-2} z^{-2} +a^2+2 a^{-2} -z^4-4 z^2-2 z^{-2} -4$ (db)
Kauffman polynomial	$a^5 z^9+a^3 z^9+2 a^6 z^8+3 a^4 z^8+a^2 z^8+a^7 z^7-4 a^5 z^7-6 a^3 z^7+z^7 a^{-1} -11 a^6 z^6-19 a^4 z^6-7 a^2 z^6+z^6 a^{-2} +2 z^6-5 a^7 z^5-a^5 z^5+8 a^3 z^5-4 z^5 a^{-1} +16 a^6 z^4+33 a^4 z^4+11 a^2 z^4-5 z^4 a^{-2} -11 z^4+6 a^7 z^3+9 a^5 z^3-3 a^3 z^3-5 a z^3+z^3 a^{-1} -8 a^6 z^2-20 a^4 z^2-5 a^2 z^2+7 z^2 a^{-2} +14 z^2-2 a^7 z-4 a^5 z+6 a z+4 z a^{-1} +2 a^6+4 a^4-2 a^2-4 a^{-2} -7-2 a z^{-1} -2 a^{-1} z^{-1} +a^2 z^{-2} + a^{-2} z^{-2} +2 z^{-2}$ (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   \ -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 χ 7                       1 1 5                         0 3                   2 1   1 1               2 1 1     2 -1             1 3 1       1 -3           2 2 2         2 -5         2 3 1           0 -7       1 1 1             1 -9     1 2 1               0 -11   1 1                   0 -13   1                     1 -15 1                       -1

Integral Khovanov Homology (db, data source)

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

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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