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The Laplacian in Terms of Polar Coordinates 0.1. Linear diﬀerential operators. The Laplacian ∆ = @2 @x2 + @2 @y2 + @2 @z2 is an example of a linear diﬀerential ... - read more

1 Formal self-adjointness; 2 Eigenvalues of the Laplace–Beltrami operator (Lichnerowicz–Obata theorem) 3 Tensor Laplacian; 4 Laplace–de Rham operator - read more

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