We establish conditions for the existence of almost periodic solutions of nonlinear almost periodic differential equations in Banach spaces without using the \( \mathcal{H} \)-classes of these equations.
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Translated from Ukrains’kyi Matematychnyi Zhurnal, Vol. 65, No. 2, pp. 307–312, February, 2013.
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Slyusarchuk, V.Y. Conditions for the existence of almost periodic solutions of nonlinear differential equations in Banach spaces. Ukr Math J 65, 341–347 (2013). https://doi.org/10.1007/s11253-013-0781-y
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DOI: https://doi.org/10.1007/s11253-013-0781-y