Info : T is actually a triangulation -list of triangles-, in which each index corresponding to the row index of a vertex in another list -a vertices list-, it is a widely used technique used to store and write triangular meshes in mesh processing. Here below the example is a tetrahedron -4 facets-.
Energy of a photon
Specific Element Count
Determine Whether an array is empty
Determine if input is a perfect number
Natural numbers in string form
Query edges list
Remove duplicated vertices
Find a common edge
Query every vertices neighbor indices
Find neighbor triangle indices
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