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The Earth-

**Moon**problem is a special case of the empire problem for countries with m=2 disjoint regions, with one region of each country lying on the Earth and one on the**Moon**...The Baer differential equation is given by while the Baer "wave equation" is (

**Moon**and Spencer 1961, pp. 156-157; Zwillinger 1997, p. 121).The second-order ordinary differential equation (

**Moon**and Spencer 1961, p. 157; Zwillinger 1997, p. 166).A skew coordinate system is a system of curvilinear coordinates in which each family of surfaces intersects the others at angles other than right angles. Skew coordinate ...

A general system of fourth-order curvilinear coordinates based on the cyclide in which Laplace's equation is separable (either simply separable or R-separable). Bôcher (1894) ...

A system of curvilinear coordinates variously denoted (xi,eta,phi) (Arfken 1970) or (theta,eta,psi) (

**Moon**and Spencer 1988). Using the notation of Arfken, the bispherical ...There are several different definitions of conical coordinates defined by Morse and Feshbach (1953), Byerly (1959), Arfken (1970), and

**Moon**and Spencer (1988). The ...A vector Laplacian can be defined for a vector A by del ^2A=del (del ·A)-del x(del xA), (1) where the notation ✡ is sometimes used to distinguish the vector Laplacian from ...

A system of curvilinear coordinates for which several different notations are commonly used. In this work (u,v,phi) is used, whereas Arfken (1970) uses (xi,eta,phi) and

**Moon**...Consider the differential equation satisfied by w=z^(-1/2)W_(k,-1/4)(1/2z^2), (1) where W is a Whittaker function, which is given by ...

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