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-.
Solve the set of simultaneous linear equations
Return unique values without sorting
Multiply a column by a row
Given a matrix A return a vector of the product of the elements in each column using a loop without using prod.
Remove duplicated vertices
Find edges from a vertex
Remove duplicated triangles
Find a common edge
Query every vertices neighbor indices
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