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New results for the upper bounds of the distance between adjacent zeros of first-order differential equations with several variable delays

Article scientifique 2023 Anglais

Résumé

Abstract The distance between consecutive zeros of a first-order differential equation with several variable delays is studied. Here, we show that the distribution of zeros of differential equations with variable delays is not an easy extension of the case of constant delays. We obtain new upper bounds for the distance between zeros of all solutions of a differential equation with several delays, which extend and improve some existing results. Two illustrative examples are given to show the advantages of the proposed results over the known ones.

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Attia, E., El-Matary, B. (2023). New results for the upper bounds of the distance between adjacent zeros of first-order differential equations with several variable delays. https://doi.org/10.1186/s13660-023-03017-w

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Auteur(s)

Emad R. Attia Bassant M. El-Matary

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