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classical

Action Principles and Lagrangian Mechanics

An introduction to Lagrangian mechanics, the foundation of all modern physics. Why do we use Lagrangian mechanics? What is the Lagrangian? And how it is derived from the principle of least action?

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quantum gravity

Black Holes and Quantum Holography

An introduction to Lagrangian mechanics, the foundation of all modern physics. Why do we use Lagrangian mechanics? What is the Lagrangian? And how it is derived from the principle of least action?