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$$ds = \sqrt{dy^2 + dz^2}$$
ds = \sqrt{dy^2 + dz^2}

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$$R_{\mu\nu} – \frac{1}{2}g_{\mu\nu} + \Lambda g_{\mu\nu} = \frac{8\pi G}{c^4} T_{\mu\nu}$$
R_{\mu\nu} – \frac{1}{2}g_{\mu\nu} + \Lambda g_{\mu\nu} = \frac{8\pi G}{c^4} T_{\mu\nu}

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