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Singularity analysis towards nonintegrability of nonhomogeneous nonlinear lattices

Ken Umeno

solv-intarXiv:solv-int/9704009

Abstract

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 Lamé type.

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