The theory of everything is also called the final theory.

The state was by no means a constituent part of the productive relations, which economic theory has been called upon to study.

A theory that has been used in many subjects by many people is often called a law.

The idea or theory that something cannot be split into any parts is called monism.

The aesthetic theory that people approach art with different aims is called pluralism.

In mathematics, a theory is called consistent, if does not contain any contradictions.

A theory with such a property is called a gauge theory.

The zoning theory behind Manhattan's landscape since 1961 is called "tower in the park."

Brahm's theory has been called, "an innovative approach to development."

The theory to explain the different psychological experiences is called belongingness.