Singularity analysis towards nonintegrability of nonhomogeneous nonlinear lattices
classification
solv-int
nlin.SI
keywords
analysisnonlinearsingularitytypeequationsfermi-pasta-ulamlatticelattices
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We show non-integrability of the nonlinear lattice of Fermi-Pasta-Ulam type via the singularity analysis(Picard-Vessiot theory) of normal variational equations of Lam\'e type.
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