Résumé
On démontre la semi-invariance ou la quasi-invariance des ensembles limites pour une équation différentielle à retard, sans supposer l'unicité ni la prolongeabilité des solutions, et sans supposer non plus que la solution engendrant l'ensemble limite soit contenue dans un ensemble compact ou fermé.
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A Dario Graffi, pour son 70-ème anniversaire
Entrata in Redazione il 7 maggio 1975.
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Rouche, N. The invariance of limit sets for retarded differential equations. Annali di Matematica 108, 125–135 (1976). https://doi.org/10.1007/BF02413948
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DOI: https://doi.org/10.1007/BF02413948