A <a href="https://en.wikipedia.org/wiki/Formal_concept_analysis" class="extiw" title="en:Formal concept analysis">concept lattice</a>, with the numbers 1–10 as objects and attributes square, prime, composite, even, and odd (shown as initials).
<a href="//commons.wikimedia.org/wiki/User:David_Eppstein" class="mw-redirect" title="User:David Eppstein">David Eppstein</a>
2006-10-19
self-made; originally uploaded as <a href="https://en.wikipedia.org/wiki/Image:Concept-lattice.png" class="extiw" title="en:Image:Concept-lattice.png">en:Image:Concept-lattice.png</a>