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where in the last command we have expanded each component on r to get a convential result. The vector Laplacian can be obtained from (@ is Moon and Spencer notation) @ B ≡ grad(diverge B) – curl (curl B) = " ∇2 B " Recall that [@B]i =∇2[Bi] only in Cartesian coordinates, where ∇2 is the scalar Laplacian. The reader interested in learning how Maple computes all these curvilinear coordinate expressions will find the answer in our document "Tensor Analysis and Curvilinear Coordinates". 78