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-.
Check if sorted
Remove the two elements next to NaN value
Piecewise linear interpolation
Return area of square
Rotate Matrix @180 degree
Query a vertex neighbors
Query edges list
Find edges from a vertex
Remove duplicated vertices
Find neighbor triangle indices
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