| 1. | This places a constraint on the change in total angular momentum.
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| 2. | Total angular momentum is always conserved, see Noether's theorem.
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| 3. | The lowest energy states for odd total angular momentum occur when
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| 4. | Their sum, that is the total angular momentum, instead does.
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| 5. | The total angular momentum conservation is given by another continuity equation
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| 6. | The total angular momentum is always the sum of spin and orbital contributions.
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| 7. | Rotational symmetry results in the total angular momentum being constant
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| 8. | What is the total angular momentum of the universe?
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| 9. | The total angular momentum corresponds to the Casimir invariant of the Lie algebra rotation group.
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| 10. | Is the total angular momentum of Jupiter preserved, or is its orbital velocity preserved?
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