Best Hausdorff approximations by algebraic polynomials and porosity
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For anyb ∈ (a, a′), a sharp lower bound for the coefficient ofv-uniformity of the set of discontinuity points of a functionf on the interval (−b, b) is obtained.
KeywordsPorosity Discontinuity Point Algebraic Polynomial Hausdorff Approximation
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© Plenum Publishing Corporation 1996