A <a href="https://en.wikipedia.org/wiki/Modular_lattice" class="extiw" title="en:Modular lattice">modular lattice</a> of <a href="https://en.wikipedia.org/wiki/Order_dimension" class="extiw" title="en:Order dimension">order dimension</a> 2. As with all 2-dimensional lattices, its <a href="https://en.wikipedia.org/wiki/Hasse_diagram" class="extiw" title="en:Hasse diagram">Hasse diagram</a> is an <a href="https://en.wikipedia.org/wiki/st-planar_graph" class="extiw" title="en:st-planar graph"><i>st</i>-planar graph</a>. The 2-dimensional modular lattices all have drawings of this type, with square grid cells subdivided by length-2 paths; see <a rel="nofollow" class="external free" href="https://11011110.github.io/blog/2016/09/07/drawing-2d-modular.html">https://11011110.github.io/blog/2016/09/07/drawing-2d-modular.html</a> for details.
<a href="//commons.wikimedia.org/wiki/User:David_Eppstein" class="mw-redirect" title="User:David Eppstein">David Eppstein</a>
<span class="int-own-work" lang="en">Own work</span>