Stability of delay differential equations in the sense of Ulam on unbounded intervals

Stability of delay differential equations in the sense of Ulam on unbounded intervals

In this paper, we consider the stability problem of delay differential equationsin the sense of Hyers-Ulam-Rassias. Recently this problem has been solvedfor bounded intervals, our result extends and improve the literature by obtain-ing stability in unbounded intervals. An illustrative example is also given tocompare these results and visualize the improvement.

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