Einstein-Ricci Equation

The Einstein-Ricci equation is a fundamental part of Einstein's theory of general relativity, describing how matter and energy influence the curvature of spacetime. In essence, it relates the Ricci curvature, which measures how spacetime bends, to the distribution of matter and energy. The equation shows that regions with more mass or energy cause greater curvature, affecting the motion of objects and the flow of time. It's a key mathematical expression that helps us understand how gravity works on a cosmic scale, linking geometry (the shape of spacetime) with physics (mass-energy content).