The King and I is based on Anna and the King of Siam.
The harmonic coordinate condition is one of several coordinate conditions in general relativity , which make it possible to solve the Einstein field equations .. coordinate conditions. coordinate conditions. general relativity. general relativity. Einstein field equations. Einstein field equations. A coordinate system is said to satisfy the harmonic coordinate condition if each of the coordinate functions xα -LRB- regarded as scalar fields -RRB- satisfies d'Alembert 's equation .. The parallel notion of a harmonic coordinate system in Riemannian geometry is a coordinate system whose coordinate functions satisfy Laplace 's equation .. harmonic coordinate system. harmonic coordinate system. Riemannian geometry. Riemannian geometry. Since d'Alembert 's equation is the generalization of Laplace 's equation to space-time , its solutions are also called `` harmonic '' .