None of the above. Four have gotten into the act.
http://en.wikipedia.org/wiki/Friedmann%E2%80%93Lema%C3%AEtre%E2%80%93Robertson%E2%80%93Walker_metric
The equation describing the geometry and mass-energy distribution of a homogeneous and isotropic universe is known as:
- The Einstein Equation
- The Friedmann Equation
- The Robertson-Walker Equation
- The Hubble Equation
2 answers
The Friedmann Equation
1 answer