Integral lattice 7.512.16.1.2

• Label: 7.512.16.1.2
• Class number: $1$
• Dimension: $7$
• Determinant: $512$
• Level: $16$

Lattice Invariants

Dimension:

$7$

Determinant:

$512$

Level:

$16$

Density:

$0.0184561170716070358187359018256\dots$

Group order:

$1536$

Hermite number:

$0.820335356007637931170284682868\dots$

Minimal vector length:

$2$

Kissing number:

$4$

Normalized minimal vectors:

$(1, 0, 0, 0, 0, 0, 0)$, $(0, 1, 0, 0, 0, 0, 0)$

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Theta Series

Gram Matrix

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

Genus Structure

Genus representatives:

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