Welcome to math!

Welcome to the math subject

The Einstein field equations are as follows

\[R_{\mu\nu}-\frac{1}{2}g_{\mu\nu}R=\frac{8\pi G}{c^4} T_{\mu\nu}\,,\]

where \(R_{\mu\nu}\) is Ricci curvature, \(R\) is scalar curvature, \(g_{\mu\nu}\) is metric, \(G=6.67\times 10^{-11}\) is the Newtonian constant of gravitation, \(c=2.99\times 10^{8}\) is the speed of light in vacuum and \(T_{\mu\nu}\) is the stress–energy tensor.