Vacuum Einstein equations
= Vacuum Einstein equations
{c}
In a region with vanishing <stress-energy tensor>, the <Einstein field equations> reduce to $R_{\mu\nu}=0$ when the <cosmological constant> vanishes.
= Vacuum Einstein equations
{c}
In a region with vanishing <stress-energy tensor>, the <Einstein field equations> reduce to $R_{\mu\nu}=0$ when the <cosmological constant> vanishes.