We determine the subspaces of solutions of the systems of Laplace and heat-conduction differential equations isometric to the corresponding spaces of real functions defined on the set of real numbers.
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Translated from Ukrains’kyi Matematychnyi Zhurnal, Vol. 71, No. 8, pp. 1011–1027, August, 2019.
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Abdullayev, F.G., Bushev, D.M., kyzy, M.I. et al. Isometry of the Subspaces of Solutions of Systems of Differential Equations to the Spaces of Real Functions. Ukr Math J 71, 1153–1172 (2020). https://doi.org/10.1007/s11253-019-01705-9
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DOI: https://doi.org/10.1007/s11253-019-01705-9