proof ch:14-calculus-of-variations@proof-47

open in the book · parts/02-mathematical-methods/14-calculus-of-variations.tex:3177

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proof : ch:14-calculus-of-variations@proof-47prooflemma 16.100: The ray equation16.100equation 16.30: eq:calcvar-euler-lagrange-system16.30equation 16.89: eq:calcvar-optical-length16.89definition 16.103: Optical path length; Fermat's principle16.103proposition 23.41: Rays23.41theorem 16.101: Maupertuis–Euler–Jacobi principle16.101

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