Piţul, Paula; Sablonnière, Paul A family of univariate rational Bernstein operators. (English) Zbl 1180.41010 J. Approx. Theory 160, No. 1-2, 39-55 (2009). Reviewer: Ljubiša Kocić (Niš) MSC: 41A20 41A36 PDFBibTeX XMLCite \textit{P. Piţul} and \textit{P. Sablonnière}, J. Approx. Theory 160, No. 1--2, 39--55 (2009; Zbl 1180.41010) Full Text: DOI
Terán, Pedro Function-valued Korovkin systems without quasiconcavity and set-valued Korovkin systems without convexity. (English) Zbl 1074.41014 J. Approximation Theory 127, No. 1, 74-82 (2004). Reviewer: Vijay Gupta (Auburn) MSC: 41A30 41A35 PDFBibTeX XMLCite \textit{P. Terán}, J. Approx. Theory 127, No. 1, 74--82 (2004; Zbl 1074.41014) Full Text: DOI
Borwein, J. M.; Jiménez-Sevilla, M.; Moreno, J. P. Antiproximinal norms in Banach spaces. (English) Zbl 1037.46012 J. Approximation Theory 114, No. 1, 57-69 (2002). Reviewer: Stefan Cobzaş (Cluj-Napoca) MSC: 46B20 41A65 PDFBibTeX XMLCite \textit{J. M. Borwein} et al., J. Approx. Theory 114, No. 1, 57--69 (2002; Zbl 1037.46012) Full Text: DOI Link
Romaguera, Salvador; Sanchis, Manuel Semi-Lipschitz functions and best approximation in quasi-metric spaces. (English) Zbl 0980.41029 J. Approximation Theory 103, No. 2, 292-301 (2000). Reviewer: Costica Mustăţa (Cluj-Napoca) MSC: 41A65 PDFBibTeX XMLCite \textit{S. Romaguera} and \textit{M. Sanchis}, J. Approx. Theory 103, No. 2, 292--301 (2000; Zbl 0980.41029) Full Text: DOI
Muñoz-Delgado, F. J.; Ramírez-González, V.; Cárdenas-Morales, D. Qualitative Korovkin-type results on conservative approximation. (English) Zbl 0911.41015 J. Approximation Theory 94, No. 1, 144-159 (1998). Reviewer: I.Raşa (Cluj-Napoca) MSC: 41A36 41A35 PDFBibTeX XMLCite \textit{F. J. Muñoz-Delgado} et al., J. Approx. Theory 94, No. 1, 144--159 (1998; Zbl 0911.41015) Full Text: DOI
Khan, M. Kazim; Della Vecchia, B.; Fassih, A. On the monotonicity of positive linear operators. (English) Zbl 0898.41019 J. Approximation Theory 92, No. 1, 22-37 (1998). Reviewer: M.W.Müller (Dortmund) MSC: 41A36 41A27 41A35 PDFBibTeX XMLCite \textit{M. K. Khan} et al., J. Approx. Theory 92, No. 1, 22--37 (1998; Zbl 0898.41019) Full Text: DOI
Badea, C. On a Korovkin-type theorem for simultaneous approximation. (English) Zbl 0738.41021 J. Approximation Theory 62, No. 2, 223-234 (1990). Reviewer: K.Horák MSC: 41A28 41A36 PDFBibTeX XMLCite \textit{C. Badea}, J. Approx. Theory 62, No. 2, 223--234 (1990; Zbl 0738.41021) Full Text: DOI
Cao, Jia-Ding; Gonska, Heinz H. Approximation by Boolean sums of positive linear operators. II: Gopengauz-type estimates. (English) Zbl 0732.41022 J. Approximation Theory 57, No. 1, 77-89 (1989). Reviewer: M.W.Müller (Dortmund) MSC: 41A36 PDFBibTeX XMLCite \textit{J.-D. Cao} and \textit{H. H. Gonska}, J. Approx. Theory 57, No. 1, 77--89 (1989; Zbl 0732.41022) Full Text: DOI
Zalik, R. A.; Zwick, D. On extending the domain of definition of Chebyshev and weak Chebyshev systems. (English) Zbl 0684.41025 J. Approximation Theory 57, No. 2, 202-210 (1989). Reviewer: N.Nashed MSC: 41A65 41A50 PDFBibTeX XMLCite \textit{R. A. Zalik} and \textit{D. Zwick}, J. Approx. Theory 57, No. 2, 202--210 (1989; Zbl 0684.41025) Full Text: DOI
Kratz, Werner; Stadtmüller, Ulrich On the uniform modulus of continuity of certain discrete approximation operators. (English) Zbl 0663.41025 J. Approximation Theory 54, No. 3, 326-337 (1988). Reviewer: L.Hahn MSC: 41A36 26A15 PDFBibTeX XMLCite \textit{W. Kratz} and \textit{U. Stadtmüller}, J. Approx. Theory 54, No. 3, 326--337 (1988; Zbl 0663.41025) Full Text: DOI
Hack, F. J. On bivariate Birkhoff interpolation. (English) Zbl 0628.41005 J. Approximation Theory 49, 18-30 (1987). Reviewer: R.Precup MSC: 41A05 PDFBibTeX XMLCite \textit{F. J. Hack}, J. Approx. Theory 49, 18--30 (1987; Zbl 0628.41005) Full Text: DOI
Magnus, Alphonse P. On Freud’s equations for exponential weights. (English) Zbl 0619.42015 J. Approximation Theory 46, 65-99 (1986). Reviewer: L.Gatteschi MSC: 42C05 33C45 PDFBibTeX XMLCite \textit{A. P. Magnus}, J. Approx. Theory 46, 65--99 (1986; Zbl 0619.42015) Full Text: DOI
Nevai, Paul Géza Freud, orthogonal polynomials and Christoffel functions. A case study. (English) Zbl 0606.42020 J. Approximation Theory 48, 3-167 (1986). Reviewer: M.G.de Bruin MSC: 42C05 42-02 42A20 40G05 40F05 PDFBibTeX XMLCite \textit{P. Nevai}, J. Approx. Theory 48, 3--167 (1986; Zbl 0606.42020) Full Text: DOI
Alkemade, J. A. H. The second moment for the Meyer-König and Zeller operators. (English) Zbl 0575.41013 J. Approximation Theory 40, 261-273 (1984). Reviewer: H.R.Dowson MSC: 41A36 PDFBibTeX XMLCite \textit{J. A. H. Alkemade}, J. Approx. Theory 40, 261--273 (1984; Zbl 0575.41013) Full Text: DOI
Denk, Hans; Riederle, Max A generalization of a theorem of Pringsheim. (English) Zbl 0511.46047 J. Approximation Theory 35, 355-363 (1982). MSC: 46H05 30B70 40A15 PDFBibTeX XMLCite \textit{H. Denk} and \textit{M. Riederle}, J. Approx. Theory 35, 355--363 (1982; Zbl 0511.46047) Full Text: DOI
Cobzas, S.; Mustata, C. Norm-preserving extension of convex Lipschitz functions. (English) Zbl 0405.41023 J. Approximation Theory 24, 236-244 (1978). MSC: 41A65 PDFBibTeX XMLCite \textit{S. Cobzas} and \textit{C. Mustata}, J. Approx. Theory 24, 236--244 (1978; Zbl 0405.41023) Full Text: DOI