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Properties

Label 3.9.18.1.2
Class number $1$
Dimension $3$
Determinant $9$
Level $18$

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Lattice Invariants

Dimension:$3$
Determinant:$9$
Level:$18$
Density:$0.174532925199432957692369076849\dots$
Group order:$8$
Hermite number:$0.480749856769136127440546103594\dots$
Minimal vector length:$1$
Kissing number:$2$
Normalized minimal vectors: $(1, 0, 0)$
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Theta Series

\(1 \) \(\mathstrut +\mathstrut 2 q \) \(\mathstrut +\mathstrut 2 q^{2} \) \(\mathstrut +\mathstrut 4 q^{3} \) \(\mathstrut +\mathstrut 2 q^{4} \) \(\mathstrut +\mathstrut 4 q^{5} \) \(\mathstrut +\mathstrut 12 q^{6} \) \(\mathstrut +\mathstrut 2 q^{8} \) \(\mathstrut +\mathstrut 18 q^{9} \) \(\mathstrut +\mathstrut 8 q^{10} \) \(\mathstrut +\mathstrut 4 q^{11} \) \(\mathstrut +\mathstrut 4 q^{12} \) \(\mathstrut +\mathstrut 8 q^{13} \) \(\mathstrut +\mathstrut 8 q^{14} \) \(\mathstrut +\mathstrut 2 q^{16} \) \(\mathstrut +\mathstrut 8 q^{17} \) \(\mathstrut +\mathstrut 24 q^{18} \) \(\mathstrut +\mathstrut 8 q^{19} \) \(\mathstrut +\mathstrut 4 q^{20} \) \(\mathstrut +\mathstrut O(q^{21}) \)

Gram Matrix

$\left(\begin{array}{rrr} 1 & 0 & 0 \\ 0 & 2 & -1 \\ 0 & -1 & 5 \end{array}\right)$

Genus Structure

Genus representatives:
Class number:$1$
 
$\left(\begin{array}{rrr} 1 & 0 & 0 \\ 0 & 2 & -1 \\ 0 & -1 & 5 \end{array}\right)$
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