General Relativistic Calculations in Mathematica

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Riccicd[-j, -l]. Contracting it again gives us the Ricci scalar, metric[j, l] Riccicd[-j, -l] // ContractMetric // InputForm. RicciScalarcd[]. GRCalcs.nb. 9 ...
General Relativistic Calculations in Mathematica By George E. Hrabovsky

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GRCalcs.nb

What I Will Cover 00 00

What is xAct?

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What Do We Do Next?

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Contraction

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Covariant Derivatives

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The Second Bianchi Identity

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Perturbative GR

GRCalcs.nb

What is xAct? This is a very complete system for doing tensor analysis in the Mathematica system. All you need do is open the system:

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