Abstract
The paper presents a survey of the theory of local polynomial approximation and its applications to the study of the classical spaces of smooth functions. The study includes such topics as embeddings and extensions, pointwise differentiability and Luzin type theorems, nonlinear approximation by piecewise polynomials and splines, and the real interpolation.
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Brudnyi, Y. (2009). Sobolev Spaces and their Relatives: Local Polynomial Approximation Approach. In: Maz'ya, V. (eds) Sobolev Spaces in Mathematics II. International Mathematical Series, vol 9. Springer, New York, NY. https://doi.org/10.1007/978-0-387-85650-6_4
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DOI: https://doi.org/10.1007/978-0-387-85650-6_4
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