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A remark on multivariate projection operators |
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| Authors: | B. Della Vecchia G. Mastroianni P. Vértesi |
| Affiliation: | 1. Dipartimento di Matematica, Universitá di Roma ‘La Sapienza’, Roma, Piazzale Aldo Moro 7, I-00185, Italy 2. Dipartimento di Matematica, Universitá della Basilicata, Potenza, Contrada Macchia Romana, I-85100, Italy 3. Alfréd Rényi Institute of Mathematics, Hungarian Academy of Sciences, Budapest, Reáltanoda u. 13–15, H-1053, Hungary |
| Abstract: | This paper is a recapitulation of the work of L. Szili and P. Vértesi [4] on multivariate Fourier series with triangular type partial sums. Namely, we give another proof for the corresponding lower estimation, which, in a way, is more direct than the previous one in [4]. |
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