Abstract
In this paper, we present an analysis of some cases where a positive integer cannot be represented by a diagonal quadratic form with four integer variables.
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Translated from Itogi Nauki i Tekhniki, Seriya Sovremennaya Matematika i Ee Prilozheniya. Tematicheskie Obzory, Vol. 166, Proceedings of the IV International Scientific Conference “Actual Problems of Applied Mathematics,” Kabardino-Balkar Republic, Nalchik, Elbrus Region, May 22–26, 2018. Part II, 2019.
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Kurtova, L.N., Mot’kina, N.N. On Types of Solutions of the Lagrange Problem. J Math Sci 260, 194–201 (2022). https://doi.org/10.1007/s10958-022-05683-5
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DOI: https://doi.org/10.1007/s10958-022-05683-5