Não disponível / This work is concerned with the differential-difference equation x(t) = - fα(X(t-1)), α > where fα is an odd simple function. We use the concept of ejectivity to show the existence of nontrivial periodic solutions for any α > 0. By elementary arguments we also show the uniqueness of these solutions for each α < 2 and the existence of at least two such solutionis for each α ≥ 2.
| Identifer | oai:union.ndltd.org:usp.br/oai:teses.usp.br:tde-01042019-162831 |
| Date | 21 September 1989 |
| Creators | Rodrigues, Jose Carlos |
| Contributors | Táboas, Plácido Zoega |
| Publisher | Biblioteca Digitais de Teses e Dissertações da USP |
| Source Sets | Universidade de São Paulo |
| Language | Portuguese |
| Detected Language | English |
| Type | Dissertação de Mestrado |
| Format | application/pdf |
| Rights | Liberar o conteúdo para acesso público. |
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