L11n375

L11n374

L11n376

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Link Presentations

[edit Notes on L11n375's Link Presentations]

Planar diagram presentation	X6172 X14,7,15,8 X4,15,1,16 X5,10,6,11 X3849 X17,22,18,19 X11,20,12,21 X19,12,20,13 X21,18,22,5 X9,16,10,17 X13,2,14,3
Gauss code	{1, 11, -5, -3}, {-8, 7, -9, 6}, {-4, -1, 2, 5, -10, 4, -7, 8, -11, -2, 3, 10, -6, 9}

A Braid Representative
A Morse Link Presentation

Polynomial invariants

Multivariable Alexander Polynomial (in $u$, $v$, $w$, ...)	$\frac{(t(3)-1) \left(t(1) t(3)^4-t(1) t(3)^3+2 t(1) t(2) t(3)^3-t(2) t(3)+2 t(3)+t(2)\right)}{\sqrt{t(1)} \sqrt{t(2)} t(3)^{5/2}}$ (db)
Jones polynomial	$q^{-3} -2 q^{-4} +4 q^{-5} -3 q^{-6} +6 q^{-7} -5 q^{-8} +5 q^{-9} -3 q^{-10} +2 q^{-11} - q^{-12}$ (db)
Signature	-6 (db)
HOMFLY-PT polynomial	$-a^{14} z^{-2} +a^{12} z^2+4 a^{12} z^{-2} +6 a^{12}-3 a^{10} z^4-14 a^{10} z^2-5 a^{10} z^{-2} -15 a^{10}+2 a^8 z^6+10 a^8 z^4+14 a^8 z^2+2 a^8 z^{-2} +8 a^8+a^6 z^6+4 a^6 z^4+3 a^6 z^2+a^6$ (db)
Kauffman polynomial	$z^3 a^{15}-2 z a^{15}+a^{15} z^{-1} +2 z^4 a^{14}-4 z^2 a^{14}-a^{14} z^{-2} +2 a^{14}+z^7 a^{13}-5 z^5 a^{13}+14 z^3 a^{13}-15 z a^{13}+5 a^{13} z^{-1} +2 z^8 a^{12}-11 z^6 a^{12}+25 z^4 a^{12}-25 z^2 a^{12}-4 a^{12} z^{-2} +14 a^{12}+z^9 a^{11}-z^7 a^{11}-14 z^5 a^{11}+40 z^3 a^{11}-33 z a^{11}+9 a^{11} z^{-1} +5 z^8 a^{10}-26 z^6 a^{10}+47 z^4 a^{10}-40 z^2 a^{10}-5 a^{10} z^{-2} +21 a^{10}+z^9 a^9-16 z^5 a^9+30 z^3 a^9-20 z a^9+5 a^9 z^{-1} +3 z^8 a^8-14 z^6 a^8+20 z^4 a^8-16 z^2 a^8-2 a^8 z^{-2} +9 a^8+2 z^7 a^7-7 z^5 a^7+3 z^3 a^7+z^6 a^6-4 z^4 a^6+3 z^2 a^6-a^6$ (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   \ -9 -8 -7 -6 -5 -4 -3 -2 -1 0 χ -5                   1 1 -7                 2 1 -1 -9               2     2 -11           1 2 2     1 -13         1 6 2       3 -15         2 3         1 -17       4 4           0 -19   1 1 2             2 -21   2 3               -1 -23   1                 1 -25 1                   -1

Integral Khovanov Homology (db, data source)

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

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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