Partial shape preserving approximation b
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G.A. Anastassiou; S.G. Gal
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Article
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2001
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Elsevier Science
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English
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Extending the results from the univariate case in a paper by Gal and Szabados, in this paper, we prove that the bivariate interpolation operators of Hermite-Fej@r preserve some kinds of monotonicity and convexity of bivariate functions, in the neighborhoods of some points. Also, quantitative results