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math.NA2016
Truncation Dimension for Function Approximation
Peter Kritzer, Friedrich Pillichshammer, G. W. Wasilkowski
We consider approximation of functions of variables, where is very large or infinite, that belong to weighted anchored spaces. We study when such functions can be approxima…
math.NA2016
-approximation in Korobov spaces with Exponential Weights
Peter Kritzer, Friedrich Pillichshammer, Henryk Wozniakowski
We study multivariate -approximation for a weighted Korobov space of periodic functions for which the Fourier coefficients decay exponentially fast. The we…