L8n7

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L8n6

L8n8

Contents

Image:L8n7.gif
(Knotscape image)
See the full Thistlethwaite Link Table (up to 11 crossings).

Visit L8n7's page at Knotilus.

Visit L8n7's page at the original Knot Atlas.


[edit] Link Presentations

[edit Notes on L8n7's Link Presentations]

Planar diagram presentation X6172 X2536 X11,13,12,16 X3,11,4,10 X9,1,10,4 X7,15,8,14 X13,5,14,8 X15,9,16,12
Gauss code {1, -2, -4, 5}, {2, -1, -6, 7}, {-5, 4, -3, 8}, {-7, 6, -8, 3}
A Braid Representative
Image:BraidPart1.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart3.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gif
Image:BraidPart2.gifImage:BraidPart1.gifImage:BraidPart0.gifImage:BraidPart1.gifImage:BraidPart0.gifImage:BraidPart1.gifImage:BraidPart0.gifImage:BraidPart3.gifImage:BraidPart4.gifImage:BraidPart3.gifImage:BraidPart0.gifImage:BraidPart1.gifImage:BraidPart0.gifImage:BraidPart1.gifImage:BraidPart0.gifImage:BraidPart1.gif
Image:BraidPart0.gifImage:BraidPart2.gifImage:BraidPart3.gifImage:BraidPart2.gifImage:BraidPart1.gifImage:BraidPart2.gifImage:BraidPart1.gifImage:BraidPart4.gifImage:BraidPart0.gifImage:BraidPart4.gifImage:BraidPart3.gifImage:BraidPart2.gifImage:BraidPart3.gifImage:BraidPart2.gifImage:BraidPart1.gifImage:BraidPart2.gif
Image:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart4.gifImage:BraidPart1.gifImage:BraidPart2.gifImage:BraidPart1.gifImage:BraidPart2.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart4.gifImage:BraidPart3.gifImage:BraidPart4.gifImage:BraidPart3.gifImage:BraidPart2.gifImage:BraidPart0.gif
Image:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart2.gifImage:BraidPart1.gifImage:BraidPart2.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart4.gifImage:BraidPart3.gifImage:BraidPart4.gifImage:BraidPart0.gifImage:BraidPart0.gif
Image:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart2.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart4.gifImage:BraidPart0.gifImage:BraidPart0.gifImage:BraidPart0.gif
A Morse Link Presentation Image:L8n7_ML.gif

[edit] Polynomial invariants

Multivariable Alexander Polynomial (in u, v, w, ...) uv + uwvwv + uxv + wuxwx + x (db)
Jones polynomial -q^{13/2}+q^{11/2}-4 q^{9/2}+q^{7/2}-4 q^{5/2}+2 q^{3/2}-3 \sqrt{q} (db)
Signature 1 (db)
HOMFLY-PT polynomial −2z3a−3 + 3za−1−6za−3 + 3za−5 + 3a−1z−1−7a−3z−1 + 5a−5z−1a−7z−1 + a−1z−3−3a−3z−3 + 3a−5z−3a−7z−3 (db)
Kauffman polynomial z6a−4z6a−6−4z5a−3−5z5a−5z5a−7−3z4a−2−2z4a−4 + z4a−6 + 12z3a−3 + 16z3a−5 + 4z3a−7 + 6z2a−2 + 12z2a−4 + 6z2a−6−6za−1−14za−3−14za−5−6za−7−8a−2−15a−4−8a−6 + 4a−1z−1 + 9a−3z−1 + 9a−5z−1 + 4a−7z−1 + 3a−2z−2 + 6a−4z−2 + 3a−6z−2a−1z−3−3a−3z−3−3a−5z−3a−7z−3 (db)

[edit] Khovanov Homology

The coefficients of the monomials trqj are shown, along with their alternating sums χ (fixed j, alternation over r). The squares with yellow highlighting are those on the "critical diagonals", where j−2r = s + 1 or j−2r = s−1, where s = 1 is the signature of L8n7. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.    Data:L8n7/KhovanovTable
Integral Khovanov Homology

(db, data source)

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

[edit] Computer Talk

Much of the above data can be recomputed by Mathematica using the package KnotTheory`. See A Sample KnotTheory` Session.

[edit] 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.

L8n6

L8n8

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