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On some properties of approximations |
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| Authors: | S. Kowalczyk S.P. Ponomarev |
| Affiliation: | Institute of Mathematics, Pomereanian Academy in S?upsk, Arciszewskiego 22b, 76-200 S?upsk, Poland |
| Abstract: | |
| Keywords: | 41A30 57R12 55M25 54F45 |
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