## Ancestors

- Internal and spacetime symmetries
- Quantum field theory
- Relativistic quantum mechanics
- Quantum mechanics
- Particle physics
- Physics
- Natural science
- Science
- Index

## Incoming links

- Defining properties of elementary particles
- Derivation of the Dirac equation
- Derivation of the quantum electrodynamics Lagrangian
- Internal and spacetime symmetries
- Local symmetry
- Physics from Symmetry by Jakob Schwichtenberg (2015)
- Why do symmetries such as SU(3), SU(2) and U(1) matter in particle physics?

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