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Variational principle for nonlinear fractional wave equation in a fractal space

The fractal derivative is adopted to describe the nonlinear fractional wave equation in a fractal space. A variational principle is successfully established by the semi-inverse method. The two-scale method and He's exp-function are usedto solve the equation, and a good result is obtained.
PAPER REVISED: 2020-06-17
PAPER ACCEPTED: 2020-06-18
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