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Approximation by multivariate quasi-projection operators and Fourier multipliers. (arXiv:2006.13272v1 [math.CA]) http://arxiv.org/abs/2006.13272
Approximation by multivariate quasi-projection operators and Fourier multipliers. (arXiv:2006.13272v1 [math.CA]) http://arxiv.org/abs/2006.13272