| Title: | Best simultaneous $L_p$ approximations (English) | 
| Author: | Karakuş, Yusuf | 
| Language: | English | 
| Journal: | Czechoslovak Mathematical Journal | 
| ISSN: | 0011-4642 (print) | 
| ISSN: | 1572-9141 (online) | 
| Volume: | 48 | 
| Issue: | 3 | 
| Year: | 1998 | 
| Pages: | 457-463 | 
| Summary lang: | English | 
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| Category: | math | 
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| Summary: | In this paper we study simultaneous approximation of $n$ real-valued functions in $L_{p}[ {a,b}]$ and give a generalization of some related results. (English) | 
| Keyword: | quasi-metric | 
| Keyword: | continuous map | 
| Keyword: | Borel map | 
| Keyword: | $\sigma $-discrete map | 
| Keyword: | $\sigma $-discretely decomposable family | 
| Keyword: | absolutely Borel set | 
| Keyword: | absolutely analytic space | 
| MSC: | 26A21 | 
| MSC: | 28A05 | 
| MSC: | 41A28 | 
| MSC: | 41A50 | 
| MSC: | 41A65 | 
| MSC: | 54E35 | 
| MSC: | 54H05 | 
| idZBL: | Zbl 0957.41011 | 
| idMR: | MR1637922 | 
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| Date available: | 2009-09-24T10:15:21Z | 
| Last updated: | 2020-07-03 | 
| Stable URL: | http://hdl.handle.net/10338.dmlcz/127432 | 
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| Reference: | [1] A.S.B. Holland and B.N. Sahney: Some remarks on best simultaneous approximation.Theory of Approximation with Application, A.G. Law and B.N. Sahney (eds.), Academic Press, New York, 1976, pp. 332–337. MR 0412694 | 
| Reference: | [2] W.H. Ling: On simultaneous Chebyshev approximation in the sum norm.Proc. Amer. Mat. Soc. 48 (1975), 185–188. Zbl 0296.41020, MR 0361555 | 
| Reference: | [3] G.M. Phillips and B.N. Sahney: Best simultaneous approximation in the $L_{{1}}$ and $L_{{2}}$ norms.Theory of Approximation with Applications, A.G. Law and B.N. Sahney (eds.), Academic press, New York, 1976, pp. 213–219. MR 0412693 | 
| Reference: | [4] A.S.B. Holland, J.H. McCabe, G.M. Phillips and B.N. Sahney: Best simultaneous $L_{{1}}$-approximations.Journal of Approximation Theory 24 (1978), 361–365. MR 0523985, 10.1016/0021-9045(78)90021-7 | 
| Reference: | [5] Y. Karakuş: Simultaneous approximation in $L_{p}$ norm.Doga-Turkish Journal of Mathematics, Tübitak-Ankara 15 (1991), 25–28. MR 1100817 | 
| Reference: | [6] Y. Karakuş and S. Atacik: Simultaneous Approximation in $L_{p}[ {a,b}] $ when $p$ is non-integer real number.Doga-Turkish Journal of Mathematics, Tübitak-Ankara 15 (1991), 165–168. MR 1136185 | 
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