Also known as Stasheff polytope
thumb|Associahedron (front) thumb|Associahedron (back) thumb| is the Hasse diagram of the [[Tamari lattice .]] thumb|The 9 faces of Each vertex in the above Hasse diagram has the ovals from the 3 adjacent faces. Faces whose ovals intersect do not touch.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).