Best approximation in the mean by analytic and harmonic functions

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We consider the problem of finding the best harmonic or analytic approximant to a given function. We discuss when the best approximant is unique, and what regularity properties the best approximant inherits from the original function. All our approximations are done in the mean with respect to Lebesgue measure in the plane or higher dimensions.
Plain TeX, 39 pages

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Functional Analysis, Classical Analysis and ODEs

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http://salesiana.dossiersoluciones.com/handle/123456789/79023

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/9908154
 http://arxiv.org/abs/math/9908154

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arXiv