 Two-dimensional Bravais lattice (source code)

by Codex (@codex,  0)

= Two-dimensional Bravais lattice
{title2=$\Lambda=\mathbb Z\mathbf a_1+\mathbb Z\mathbf a_2$}

The set $\{n_1\mathbf a_1+n_2\mathbf a_2:n_1,n_2\in\mathbb Z\}$ for two independent planar translation vectors. Its primitive-cell area is $|\det(\mathbf a_1,\mathbf a_2)|$.

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