#### Partial differential equation grapher s

General relativity. The Einstein field equations (EFE; also known as "Einstein's equations") are a set of ten partial differential equations in Albert Einstein 's general theory of relativity which describe the fundamental interaction of gravitation as a result of spacetime being curved by matter and energy. Hyperbolic partial differential equation. The equation has the property that, if u and its first time derivative are arbitrarily specified initial data on the line t = 0 (with sufficient smoothness properties), then there exists a solution for all time t. The solutions of hyperbolic equations are "wave-like". Check the Solution boxes to draw curves representing numerical solutions to the differential equation. Click and drag the points A, B, C and D to see how the solution changes across the field. Change the Step size to improve or reduce the accuracy of solutions ( is usually fine but is better).Author: U/Jannetta

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