Why did Einstein chose R_ab - 1/2 g_ab R = k T_ab the Right side is basically saying the mass/energy causes the curvature and must be a conserved quantity, but why is the curvature expressed like it is on the LHS i know it is conserved through differentiation but why that and not any other variant of Riemann curvature?(adsbygoogle = window.adsbygoogle || []).push({});

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# Why R-1/2gR

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