Later he applied methods from the metric theory of functions to problems in probability theory and number theory.

Cayley-Menger and their invariant based metric theory was an important milestone.

This is relevant to Einstein's theory of general relativity, and potentially to other metric gravitational theories.

General relativity is a metric theory of gravitation.

This implies in turn that metric theories all exhibit the gravitational redshift effect.

These charts have many applications in metric theories of gravitation such as general relativity.

Most metric theories of gravity can be lumped into categories.

Another class of metric theories is the bimetric theory.

The final main class of metric theories is the vector-tensor theories.

There are some metric theories of gravity that do not fit into the above categories, but they have similar problems.