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<a accesskey="1" href="page.php?w=discrete_geometry&amp;p=7">1.Previous</a><br />
<a accesskey="3" href="page.php?w=discrete_geometry&amp;p=9">3.Next</a>
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<p>*<a href="page.php?w=Hirsch_conjecture">Hirsch conjecture</a><br/>
*<a href="page.php?w=Opaque_set">Opaque set</a></p>

<p><big>Packings, coverings and tilings</big></p>
<p>Packings, coverings, and tilings are all ways of arranging uniform objects (typically circles, spheres, or tiles) in a regular way on a surface or <a href="page.php?w=manifold">manifold</a>.</p>

<p>A <b>sphere packing</b> is an arrangement of non-overlapping <a href="page.php?w=sphere">sphere</a>s within a containing space. The spheres considered are usually all of identical size,</p><p>
<a accesskey="1" href="page.php?w=discrete_geometry&amp;p=7">1.Previous</a><br />
<a accesskey="3" href="page.php?w=discrete_geometry&amp;p=9">3.Next</a>
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