We obtain an estimate for the convergence rate of approximation of functions on a differentiable manifold We consider two approaches to approximation of such functions. The first is based on approximate relations for the manifold and is independent of a given set of plane approximations. The second is based on approximations of functions in the plane. We consider the approximation of Courant type on the n-dimensional sphere, in the projective space, and also for the Zlamal approximation and interpolation splines.
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Translated from Problemy Matematicheskogo Analiza 111, 2021, pp. 67-89.
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Dem’yanovich, Y.K. Estimates for Local Approximations of Functions on Differential Manifold. J Math Sci 257, 624–651 (2021). https://doi.org/10.1007/s10958-021-05514-z
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DOI: https://doi.org/10.1007/s10958-021-05514-z