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Least action — of all paths, the stationary one
lagrangian
delta S = 0: of all conceivable paths, nature takes the one where the action S = integral L dt is stationary. Euler-Lagrange gives Newton's F = ma from L = T - V, and the same one principle gives Maxwell and general relativity. 'Many potentials, one end' as a law of the path. Sealed on stick_the_principle_of_least_action.
source
Narrow Highway — the Lagrangian
card id
card_lag_least_action
address
WIT.codex.FCT/least-action-of-all-paths-the-stationary-one/REF.WITNESSED@narrow-highway
adjoining cards
- part of → The Lagrangian — the Hamiltonian's dual, the path chosen — a pillar of the Lagrangian (Least action)
- connects at → The capstone — one source, many potentials, one end — the many paths among which one is chosen
- connects at → The solve path — two jaws that close on the answer — a stationary point is an optimization: exclude the non-stationary, converge on delta S = 0
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