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So what the 4x4 matrix is? It is representation of some Cartesian coordinate system and it is composed of: 3 basis vectors (one for each axis) ... ... <看更多>
The transformation matrices for covariant and contravariant vectors are different but in orthonormal coordinate system numerical values in matrices turn out ... ... <看更多>
CoordinateTransformations is a Julia package to manage simple or complex networks of coordinate system transformations. Transformations can be easily ... ... <看更多>