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The purpose of this code is to assist academics in Einstein's Theory of General Relativity. This code allows the user to input a spacetime metric of their own design and output the Christoffel symbols, Ricci curvature tensor and Ricci scalar. This code uses the Symbolic Math Toolbox™ in MATLAB® to perform these calculations.
{ricci} provides a compact R interface for performing tensor calculations. This is achieved by allowing (upper and lower) index labeling of R’s array and making use of Ricci calculus conventions.