A <a href="https://en.wikipedia.org/wiki/antimatroid" class="extiw" title="en:antimatroid">shelling sequence</a> of a planar point set. The line segments show edges of the <a href="https://en.wikipedia.org/wiki/convex_hull" class="extiw" title="en:convex hull">convex hulls</a> after some of the points have been removed.
<a href="https://en.wikipedia.org/wiki/User:David_Eppstein" class="extiw" title="wikipedia:User:David Eppstein">David Eppstein</a> at <a href="https://en.wikipedia.org/wiki/" class="extiw" title="wikipedia:">English Wikipedia</a>
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