proof ch:14-calculus-of-variations@proof-30

open in the book · parts/02-mathematical-methods/14-calculus-of-variations.tex:1885

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proof : ch:14-calculus-of-variations@proof-30prooftheorem 16.63: Hilbert's invariant integral16.63definition 16.62: Field of extremals; slope function16.62equation 16.20: eq:calcvar-euler-lagrange16.20proposition 7.136: Properties of conservative fields7.136remark 23.8: The action as a function, not a functional23.8theorem 16.64: Weierstrass' sufficient condition16.64

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