Best polynomial approximation in Besov s
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Francisco Pérez Acosta
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Article
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1997
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Elsevier Science
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English
⚖ 439 KB
In this paper we study the problem of best polynomial approximation in the Besov spaces B,3",. The density of the polynomials and a Walsh-type theorem is proved. A generalization of strong uniqueness is given, the so-called a-strong uniqueness (CI > 1). This property of best polynomial approximation