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\(L_1\)-approximation to zero. (English) Zbl 0319.41029


MSC:

41A50 Best approximation, Chebyshev systems
41A10 Approximation by polynomials

References:

[1] Ehlich, H., Zeller, K.: ?eby?ev-Polynome in mehreren Veränderlichen. Math. Z.93, 142-143 (1966) · Zbl 0156.17203 · doi:10.1007/BF01111031
[2] Singer, I.: Best Approximation in Normed Linear Spaces by Elements of Linear Subspaces. Berlin-Heidelberg-New York: Springer 1970 · Zbl 0197.38601
[3] Sloss, J.M.: Chebyshev approximation to zero. Pacific J. Math.15, 305-313 (1965) · Zbl 0146.29202
[4] Rivlin, T.J.: An Introduction to the Approximation of Functions. Waltham: Blaisdell, 1969 · Zbl 0189.06601
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