Three-uniform tetrahedron
= Three-uniform tetrahedron
{title2=$K_4^3$}
The three-uniform tetrahedron is the <hypergraph> on four vertices with all four possible triple hyperedges. It is the <complete uniform hypergraph> $K_4^3$, and differs from its geometric realization as a <tetrahedron>. Its edge pattern encodes four-term <arithmetic progressions>.