L9a41

(Knotscape image)

See the full Thistlethwaite Link Table (up to 11 crossings).

Visit L9a41's page at the original Knot Atlas.

Planar diagram presentation	X_10,1,11,2 X_2,11,3,12 X_12,3,13,4 X_18,5,9,6 X_14,8,15,7 X_16,14,17,13 X_8,16,1,15 X_6,9,7,10 X_4,17,5,18
Gauss code	{1, -2, 3, -9, 4, -8, 5, -7}, {8, -1, 2, -3, 6, -5, 7, -6, 9, -4}

A Braid Representative

A Morse Link Presentation

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

The coefficients of the monomials

t r q j

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 -2 r = s + 1

j -2 r = s -1

, where

s =

-3 is the signature of L9a41. Nonzero entries off the critical diagonals (if any exist) are highlighted in red.

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