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Properties

Label 3.318.636.9.4
Class number $9$
Dimension $3$
Determinant $318$
Level $636$

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Lattice Invariants

Dimension:$3$
Determinant:$318$
Level:$636$
Density:$0.0830481678536619254595134772078\dots$
Group order:$4$
Hermite number:$0.293013494796389714009443054213\dots$
Minimal vector length:$2$
Kissing number:$2$
Normalized minimal vectors: $(1, 0, 0)$
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Theta Series

\(1 \) \(\mathstrut +\mathstrut 2 q^{2} \) \(\mathstrut +\mathstrut 2 q^{8} \) \(\mathstrut +\mathstrut 2 q^{10} \) \(\mathstrut +\mathstrut 4 q^{12} \) \(\mathstrut +\mathstrut 2 q^{16} \) \(\mathstrut +\mathstrut 10 q^{18} \) \(\mathstrut +\mathstrut O(q^{21}) \)

Gram Matrix

$\left(\begin{array}{rrr} 2 & 0 & 0 \\ 0 & 10 & 1 \\ 0 & 1 & 16 \end{array}\right)$

Genus Structure

Genus representatives:
Class number:$9$
 
$\left(\begin{array}{rrr} 2 & 0 & 0 \\ 0 & 10 & 1 \\ 0 & 1 & 16 \end{array}\right)$, $\left(\begin{array}{rrr} 4 & 1 & 0 \\ 1 & 6 & 1 \\ 0 & 1 & 14 \end{array}\right)$, $\left(\begin{array}{rrr} 6 & -3 & 1 \\ -3 & 6 & 0 \\ 1 & 0 & 12 \end{array}\right)$, $\left(\begin{array}{rrr} 2 & 0 & 0 \\ 0 & 4 & 1 \\ 0 & 1 & 40 \end{array}\right)$, $\left(\begin{array}{rrr} 2 & -1 & 0 \\ -1 & 12 & -5 \\ 0 & -5 & 16 \end{array}\right)$, $\left(\begin{array}{rrr} 2 & 0 & 0 \\ 0 & 6 & 3 \\ 0 & 3 & 28 \end{array}\right)$, $\left(\begin{array}{rrr} 6 & -3 & -3 \\ -3 & 8 & 3 \\ -3 & 3 & 10 \end{array}\right)$, $\left(\begin{array}{rrr} 2 & 0 & -1 \\ 0 & 10 & 4 \\ -1 & 4 & 18 \end{array}\right)$, $\left(\begin{array}{rrr} 2 & -1 & 0 \\ -1 & 2 & 0 \\ 0 & 0 & 106 \end{array}\right)$
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Comments

This lattice appears in the Brandt-Intrau-Schiemann Table of Even Ternary Quadratic Forms.