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<p>in reciprocal space with orientation changed by 90° and primitive lattice vectors of length</p>

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: </p>

<p><big> Honeycomb point set </big></p>
<p>The honeycomb point set is a special case of the hexagonal lattice with a two-atom basis.  The centers of the hexagons of a honeycomb form a hexagonal lattice, and the honeycomb point set can be seen as the union of two offset hexagonal lattices.</p>

<p>In nature, <a href="page.php?w=carbon">carbon</a> atoms of the two-dimensional material <a href="page.php?w=graphene">graphene</a> are arranged in a</p><p>
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