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• Proof:Noeter theorem
  for some Lagrangian \(L=L(x,u(x),u_\bullet(x))\), realizes the extremum of the action Combining integrals in (32) and expanding the Lagrangian at \((x,u(x),u_\bullet(x))\), we get:
  9 KB (1,358 words) - 18:27, 30 July 2019
• Ocean wave solution
  ...ave solution is analytical expression of the idealized ocean wave in the [[Lagrangian coordinate]]s. number of this argument. In order to avoid confusion, in this formalism, the partial derivative of any physical quantity with respect to any physic
  12 KB (1,879 words) - 18:26, 30 July 2019