Simulations: The Brownian sphere approximated by quadrangulations

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A quadrangulation of the 2-dimensional sphere is a type of graph embedding in which a planar graph is drawn on the 2-sphere such that every face is bounded by exactly four edges, and no edges cross. Loops and multiple edges between two vertices are allowed. This can lead to artefacts when rendering faces as polygons. The viewer below allows you to interact with the 3D model.