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- W2004704358 abstract "In this paper we study the problem of best polynomial approximation in the Besov spaces Bγ,q∞. The density of the polynomials and a Walsh-type theorem is proved. A generalization of strong uniqueness is given, the so-called α-strong uniqueness (α ⩾ 1). This property of best polynomial approximations is proved in Bγ,q∞ with α = 21−1q. In the case q = 1, the classical strong uniqueness is obtained." @default.
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- W2004704358 date "1997-11-01" @default.
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- W2004704358 title "Best polynomial approximation in Besov spaces" @default.
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- W2004704358 doi "https://doi.org/10.1016/s0377-0427(97)00136-2" @default.
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