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Os teoremas de Sturm e geometria simplética
(Universidade Federal de Minas GeraisUFMG, 2012-02-24)
We studied systems of non-autonomous ordinary differential equations of the form (B(t)x0)0 = A(t)x, x E Rn, in which the matrices A(t) e B(t) are symmetric for all t in reals, identifying them with equivalent hamiltonian ...