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Notes on the Quantum Tetrahedron
2002
Moscow Mathematical Journal
This is a set of notes describing several aspects of the space of paths on ADE Dynkin diagrams, with a particular attention paid to the graph E6. Many results originally due to A. Ocneanu are described here in a very elementary way (manipulation of square or rectangular matrices). We recall the concept of essential matrices (intertwiners) for a graph and describe their module properties with respect to right and left actions of fusion algebras. In the case of the graph E6, essential matrices
doi:10.17323/1609-4514-2002-2-1-41-80
fatcat:2ct4cqgvizdcnnhqm7l4hn4kau