Properties

Label 8.1024.4.1.2
Class number $1$
Dimension $8$
Determinant $1024$
Level $4$

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Lattice Invariants

Dimension:$8$
Determinant:$1024$
Level:$4$
Density:$0.00792717212190775042614260519925\dots$
Group order:$184320$
Hermite number:$0.840896415253714543031125476233\dots$
Minimal vector length:$2$
Kissing number:$12$
Normalized minimal vectors: $(1, -1, 0, 0, 0, 0, 0, 0)$, $(1, 0, 0, 0, 0, 0, 0, 0)$, $(1, 0, 1, 0, 0, 0, 0, 0)$, $(0, 1, 0, 0, 0, 0, 0, 0)$, $(0, 1, 1, 0, 0, 0, 0, 0)$, $(0, 0, 1, 0, 0, 0, 0, 0)$
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Theta Series

\(1 \) \(\mathstrut +\mathstrut 12 q^{2} \) \(\mathstrut +\mathstrut 16 q^{4} \) \(\mathstrut +\mathstrut 336 q^{6} \) \(\mathstrut +\mathstrut 368 q^{8} \) \(\mathstrut +\mathstrut 1512 q^{10} \) \(\mathstrut +\mathstrut 448 q^{12} \) \(\mathstrut +\mathstrut 4128 q^{14} \) \(\mathstrut +\mathstrut 3184 q^{16} \) \(\mathstrut +\mathstrut 9084 q^{18} \) \(\mathstrut +\mathstrut 2016 q^{20} \) \(\mathstrut +\mathstrut O(q^{21}) \)

Gram Matrix

$\left(\begin{array}{rrrrrrrr} 2 & 1 & -1 & 0 & 0 & -1 & 1 & -1 \\ 1 & 2 & -1 & 0 & 0 & -1 & 1 & -1 \\ -1 & -1 & 2 & 0 & 0 & 0 & 0 & 0 \\ 0 & 0 & 0 & 4 & 0 & 2 & -2 & 2 \\ 0 & 0 & 0 & 0 & 4 & 2 & -2 & 2 \\ -1 & -1 & 0 & 2 & 2 & 6 & -4 & 4 \\ 1 & 1 & 0 & -2 & -2 & -4 & 6 & -2 \\ -1 & -1 & 0 & 2 & 2 & 4 & -2 & 6 \end{array}\right)$

Genus Structure

Genus representatives:
Class number:$1$
 
$\left(\begin{array}{rrrrrrrr} 2 & -1 & 1 & 0 & 0 & 0 & 0 & 0 \\ -1 & 2 & -1 & 0 & 0 & -1 & 1 & -1 \\ 1 & -1 & 2 & 0 & 0 & 1 & -1 & 1 \\ 0 & 0 & 0 & 4 & 0 & 2 & -2 & 2 \\ 0 & 0 & 0 & 0 & 4 & 2 & -2 & 2 \\ 0 & -1 & 1 & 2 & 2 & 6 & -4 & 4 \\ 0 & 1 & -1 & -2 & -2 & -4 & 6 & -2 \\ 0 & -1 & 1 & 2 & 2 & 4 & -2 & 6 \end{array}\right)$
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