# L11a121

## Contents

 (Knotscape image) See the full Thistlethwaite Link Table (up to 11 crossings). Visit L11a121's page at Knotilus. Visit L11a121's page at the original Knot Atlas.

 Planar diagram presentation X6172 X14,3,15,4 X18,8,19,7 X22,20,5,19 X20,9,21,10 X8,21,9,22 X12,18,13,17 X16,12,17,11 X10,16,11,15 X2536 X4,13,1,14 Gauss code {1, -10, 2, -11}, {10, -1, 3, -6, 5, -9, 8, -7, 11, -2, 9, -8, 7, -3, 4, -5, 6, -4}

### Polynomial invariants

 Multivariable Alexander Polynomial (in u, v, w, ...) $-\frac{t(1) t(2)^5-2 t(2)^5-4 t(1) t(2)^4+7 t(2)^4+7 t(1) t(2)^3-8 t(2)^3-8 t(1) t(2)^2+7 t(2)^2+7 t(1) t(2)-4 t(2)-2 t(1)+1}{\sqrt{t(1)} t(2)^{5/2}}$ (db) Jones polynomial $q^{11/2}-4 q^{9/2}+9 q^{7/2}-14 q^{5/2}+17 q^{3/2}-19 \sqrt{q}+\frac{18}{\sqrt{q}}-\frac{15}{q^{3/2}}+\frac{10}{q^{5/2}}-\frac{6}{q^{7/2}}+\frac{2}{q^{9/2}}-\frac{1}{q^{11/2}}$ (db) Signature 1 (db) HOMFLY-PT polynomial −z7a−1 + 3az5−4z5a−1 + z5a−3−3a3z3 + 10az3−8z3a−1 + 2z3a−3 + a5z−8a3z + 12az−9za−1 + 2za−3 + 2a5z−1−5a3z−1 + 6az−1−4a−1z−1 + a−3z−1 (db) Kauffman polynomial z4a−6 + a5z7−5a5z5 + 4z5a−5 + 9a5z3−z3a−5−7a5z + 2a5z−1 + 2a4z8−7a4z6 + 9z6a−4 + 7a4z4−8z4a−4−a4z2 + 3z2a−4−a4−a−4 + 2a3z9−a3z7 + 13z7a−3−16a3z5−19z5a−3 + 31a3z3 + 11z3a−3−21a3z−4za−3 + 5a3z−1 + a−3z−1 + a2z10 + 6a2z8 + 11z8a−2−24a2z6−12z6a−2 + 21a2z4−5z4a−2−3a2z2 + 9z2a−2−a2−3a−2 + 7az9 + 5z9a−1−6az7 + 9z7a−1−30az5−42z5a−1 + 50az3 + 40z3a−1−29az−19za−1 + 6az−1 + 4a−1z−1 + z10 + 15z8−38z6 + 18z4 + 4z2−3 (db)

### 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 L11a121. Nonzero entries off the critical diagonals (if any exist) are highlighted in red. Data:L11a121/KhovanovTable
Integral Khovanov Homology
 $\dim{\mathcal G}_{2r+i}\operatorname{KH}^r_{\mathbb Z}$ i = 0 i = 2 r = −6 ${\mathbb Z}$ r = −5 ${\mathbb Z}\oplus{\mathbb Z}_2$ ${\mathbb Z}$ r = −4 ${\mathbb Z}^{5}\oplus{\mathbb Z}_2$ ${\mathbb Z}^{2}$ r = −3 ${\mathbb Z}^{6}\oplus{\mathbb Z}_2^{4}$ ${\mathbb Z}^{4}$ r = −2 ${\mathbb Z}^{9}\oplus{\mathbb Z}_2^{6}$ ${\mathbb Z}^{6}$ r = −1 ${\mathbb Z}^{9}\oplus{\mathbb Z}_2^{9}$ ${\mathbb Z}^{9}$ r = 0 ${\mathbb Z}^{10}\oplus{\mathbb Z}_2^{9}$ ${\mathbb Z}^{10}$ r = 1 ${\mathbb Z}^{8}\oplus{\mathbb Z}_2^{9}$ ${\mathbb Z}^{9}$ r = 2 ${\mathbb Z}^{6}\oplus{\mathbb Z}_2^{8}$ ${\mathbb Z}^{8}$ r = 3 ${\mathbb Z}^{3}\oplus{\mathbb Z}_2^{6}$ ${\mathbb Z}^{6}$ r = 4 ${\mathbb Z}\oplus{\mathbb Z}_2^{3}$ ${\mathbb Z}^{3}$ r = 5 ${\mathbb Z}_2$ ${\mathbb Z}$

### Computer Talk

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

Read me first: Modifying Knot Pages

See/edit the Link Page master template (intermediate).