On the number of solutions of some ordinary periodic boundary value problems by their geometrical properties |
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| Authors: | Fabio Giannoni Anna Maria Micheletti |
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| Institution: | (1) Present address: Ist. Mat. Appl. «U. Dini», Università di Pisa, Via B. Pisano 25/B, 56126 Pisa, Italy |
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| Abstract: | Summary We describe the geometrical properties of some ordinary nonlinear differential equations, and we obtain multiplicity results of solutions by the study of the behaviour of our operator near certain singular points.Work supported by M.P.I. and G.N.A.F.A. |
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