Properties

Label 3.1658.3316.40.15
Class number $40$
Dimension $3$
Determinant $1658$
Level $3316$

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Lattice Invariants

Dimension:$3$
Determinant:$1658$
Level:$3316$
Density:$0.102871801711073954965061860328\dots$
Group order:$2$
Hermite number:$0.337959881573982579615545996882\dots$
Minimal vector length:$4$
Kissing number:$2$
Normalized minimal vectors: $(1, 0, 0)$
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Theta Series

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

Gram Matrix

$\left(\begin{array}{rrr} 4 & 1 & 1 \\ 1 & 16 & 5 \\ 1 & 5 & 28 \end{array}\right)$

Genus Structure

Genus representatives:
Class number:$40$
 
$\left(\begin{array}{rrr} 4 & 1 & 1 \\ 1 & 16 & 5 \\ 1 & 5 & 28 \end{array}\right)$, $\left(\begin{array}{rrr} 2 & -1 & -1 \\ -1 & 4 & 2 \\ -1 & 2 & 238 \end{array}\right)$, $\left(\begin{array}{rrr} 6 & 1 & 2 \\ 1 & 8 & 1 \\ 2 & 1 & 36 \end{array}\right)$, $\left(\begin{array}{rrr} 4 & 0 & 1 \\ 0 & 22 & 8 \\ 1 & 8 & 22 \end{array}\right)$, $\left(\begin{array}{rrr} 6 & 0 & 2 \\ 0 & 16 & 1 \\ 2 & 1 & 18 \end{array}\right)$, $\left(\begin{array}{rrr} 4 & 1 & 2 \\ 1 & 16 & 7 \\ 2 & 7 & 30 \end{array}\right)$, $\left(\begin{array}{rrr} 4 & 1 & 2 \\ 1 & 12 & 5 \\ 2 & 5 & 38 \end{array}\right)$, $\left(\begin{array}{rrr} 8 & -1 & -2 \\ -1 & 10 & -2 \\ -2 & -2 & 22 \end{array}\right)$, $\left(\begin{array}{rrr} 10 & 0 & 1 \\ 0 & 12 & -1 \\ 1 & -1 & 14 \end{array}\right)$ ...
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Comments

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