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20232025
most citedThree-to-one internal resonances in coupled harmonic oscillators with cubic nonlinearity

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math.AP2023

A quantitative Birkhoff Normal Form for the hinged-hinged beam equation with geometric nonlinearity

Laura Di Gregorio, Walter Lacarbonara

We consider an undamped nonlinear hinged-hinged beam with stretching nonlinearity as an infinite dimensional hamiltonian system. We obtain analytically a quantitative Birkhoff Norm…