The characteristics of the process of pursuing universality appeared in the paper on the general theory of relativity.

The beginning of the pursuit of universality (Why) | The content of universality (What) | The method of pursuing of universality (How) |
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The need for an extension of the postulate of relativity - Because of an inherent epistemological defect in classical mechanics - With the introduction of the gravitational field, inertial frames and accelerated frames have an equal right as systems of reference for describing the physical phenomena. |
1. Frame-independent laws of physics 1-1. Requirement of the general covariance: The general laws of nature are to be expressed by equations which hold good for all systems of coordinates. 1-2. The field equations 1-3. The laws of conservation of momentum and energy |
1. Pointing out specific defects in existing knowledge of physics - Epistemological defect in classical mechanics |

2. Frame-independent physical quantities (invariants) 2-1. Interval: 2-2. The trace of the energy tensor of matter: |
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2. Accepting principles and concepts that should be universally respected 2-1. Spacetime interval as an invariant quantity (from special theory of relativity) 2-2. Field equation as a second order differential equation (like other laws of physics) 2-3. Requirement of the conservation of momentum and energy |
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3. Object-independent laws of physics 3-1. Requirement that the energy of the gravitational field ( 3-2. The physical laws of matter (hydrodynamic, Maxwell’s electrodynamics) can be generalized to fit with the general relativity theory. |
3. Making new argument as universal ones that everyone will naturally accept - Requirement of the general covariance. |

New Phys.: Sae Mulli 2021;71:510~526 https://doi.org/10.3938/NPSM.71.510

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