E G Kalnins 1979 J. Phys. A: Math. Gen. 12 1129 doi:10.1088/0305-4470/12/8/007
E G Kalnins
Show affiliationsA complete classification of separable non-orthogonal systems for the flat space Helmholtz equation is given. The relation between separability conditions for the various systems and the classification of abelian sub-algebras of the Euclidean symmetry algebra epsilon (4) is explicitly indicated.
35J05 Laplace equation, reduced wave equation (Helmholtz), Poisson equation (See also 31Axx, 31Bxx)
Issue 8 (August 1979)
E G Kalnins 1979 J. Phys. A: Math. Gen. 12 1129
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