Héctor Cuenya

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Given f E L2(lR n), E > 0 and x E IR n we consider P(t) to be the polynomial of best approximation to f in the L2-norm by elements of IIm over the set x + EC, where C denote a suitable parallelepiped. Let T;'f(x) be the Qth-coefficient of P when it has been developed in the base {t"'/Q!}. In this paper we show that the operator T;' is a composition of a(More)
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