We consider a boundary-value problem for a semilinear hyperbolic equation with iterated multidimensional wave operator in the principal part. The theorems on existence, uniqueness, and nonexistence of solutions of this problem are established.
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Translated from Ukrains’kyi Matematychnyi Zhurnal, Vol. 71, No. 8, pp. 1123–1132, August, 2019.
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Kharibegashvili, S., Midodashvili, B. On the Existence, Uniqueness, and Nonexistence of Solutions of One Boundary-Value Problem for a Semilinear Hyperbolic Equation. Ukr Math J 71, 1282–1293 (2020). https://doi.org/10.1007/s11253-019-01713-9
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DOI: https://doi.org/10.1007/s11253-019-01713-9