Anastassiou, George A. Approximation by shift invariant univariate sublinear-Shilkret operators. (English) Zbl 1440.41015 Cubo 20, No. 1, 1-16 (2018). MSC: 41A36 41A17 41A25 41A35 PDFBibTeX XMLCite \textit{G. A. Anastassiou}, Cubo 20, No. 1, 1--16 (2018; Zbl 1440.41015) Full Text: DOI
Anastassiou, George A. Approximation by shift invariant multivariate sublinear-Shilkret operators. (English) Zbl 1414.41012 Bull. Allahabad Math. Soc. 33, No. 2, 279-299 (2018). MSC: 41A36 41A17 41A25 41A35 PDFBibTeX XMLCite \textit{G. A. Anastassiou}, Bull. Allahabad Math. Soc. 33, No. 2, 279--299 (2018; Zbl 1414.41012)
Anastassiou, George A. Approximation by shift invariant univariate sublinear-Choquet operators. (English) Zbl 1415.41003 Indian J. Math. 60, No. 3, 471-489 (2018). MSC: 41A17 41A25 41A35 41A36 PDFBibTeX XMLCite \textit{G. A. Anastassiou}, Indian J. Math. 60, No. 3, 471--489 (2018; Zbl 1415.41003)
Anastassiou, George A. Quantitative approximation by shift invariant multivariate sublinear-Choquet operators. (English) Zbl 1404.41005 J. Appl. Anal. 24, No. 2, 115-126 (2018). MSC: 41A35 41A25 41A36 PDFBibTeX XMLCite \textit{G. A. Anastassiou}, J. Appl. Anal. 24, No. 2, 115--126 (2018; Zbl 1404.41005) Full Text: DOI
Anastassiou, George A.; Kester, Merve Global smoothness and approximation by generalized discrete singular operators. (English) Zbl 1349.41023 Rev. Anal. Numér. Théor. Approx. 43, No. 2, 113-140 (2014). MSC: 41A28 41A17 41A25 41A35 41A80 PDFBibTeX XMLCite \textit{G. A. Anastassiou} and \textit{M. Kester}, Rev. Anal. Numér. Théor. Approx. 43, No. 2, 113--140 (2014; Zbl 1349.41023)
Anastassiou, George A. Approximation by discrete singular operators. (English) Zbl 1296.26013 Cubo 15, No. 1, 97-112 (2013). MSC: 26A15 26D15 41A17 41A25 41A44 PDFBibTeX XMLCite \textit{G. A. Anastassiou}, Cubo 15, No. 1, 97--112 (2013; Zbl 1296.26013) Full Text: DOI
Anastassiou, George A. On discrete Gauss-Weierstrass and Picard operators. (English) Zbl 1292.41010 Panam. Math. J. 23, No. 2, 79-86 (2013). MSC: 41A36 26D15 PDFBibTeX XMLCite \textit{G. A. Anastassiou}, Panam. Math. J. 23, No. 2, 79--86 (2013; Zbl 1292.41010)
Anastassiou, George A.; Mezei, Razvan A. Applications and Lipschitz results of approximation by smooth Poisson-Cauchy type singular integrals. (English) Zbl 1234.26005 J. Concr. Appl. Math. 9, No. 2, 112-145 (2011). MSC: 26A15 26D15 41A17 41A35 41A60 41A80 41A25 PDFBibTeX XMLCite \textit{G. A. Anastassiou} and \textit{R. A. Mezei}, J. Concr. Appl. Math. 9, No. 2, 112--145 (2011; Zbl 1234.26005)
Anastassiou, George A.; Gal, Sorin G. Approximation properties of some multicomplex singular integrals in the unit polydisk. (English) Zbl 1234.41015 J. Comput. Anal. Appl. 13, No. 1, 127-156 (2011). MSC: 41A35 30E10 32E30 41A25 PDFBibTeX XMLCite \textit{G. A. Anastassiou} and \textit{S. G. Gal}, J. Comput. Anal. Appl. 13, No. 1, 127--156 (2011; Zbl 1234.41015)
Anastassiou, George A.; Gal, Sorin G. Approximation properties of some multivariate generalized singular integrals in the unit polydisk. (English) Zbl 1227.30032 J. Comput. Anal. Appl. 13, No. 1, 11-19 (2011). MSC: 30E10 41A35 32E30 41A25 PDFBibTeX XMLCite \textit{G. A. Anastassiou} and \textit{S. G. Gal}, J. Comput. Anal. Appl. 13, No. 1, 11--19 (2011; Zbl 1227.30032)
Anastassiou, George A. Global smoothness preservation and simultaneous approximation for multivariate general singular integral operators. (English) Zbl 1262.47069 Appl. Math. Lett. 24, No. 6, 1009-1016 (2011). Reviewer: Kun Soo Chang (Seoul) MSC: 47G10 42B25 41A25 PDFBibTeX XMLCite \textit{G. A. Anastassiou}, Appl. Math. Lett. 24, No. 6, 1009--1016 (2011; Zbl 1262.47069) Full Text: DOI
Anastassiou, George A.; Mezei, Razvan A. Global smoothness and uniform convergence of smooth Gauss-Weierstrass singular operators. (English) Zbl 1185.42016 Math. Comput. Modelling 50, No. 7-8, 984-998 (2009). MSC: 42B25 41A28 PDFBibTeX XMLCite \textit{G. A. Anastassiou} and \textit{R. A. Mezei}, Math. Comput. Modelling 50, No. 7--8, 984--998 (2009; Zbl 1185.42016) Full Text: DOI
Anastassiou, George A.; Mezei, Razvan A. Global smoothness and uniform convergence of smooth Poisson-Cauchy type singular operators. (English) Zbl 1381.42028 Appl. Math. Comput. 215, No. 5, 1718-1731 (2009). MSC: 42B25 42B30 PDFBibTeX XMLCite \textit{G. A. Anastassiou} and \textit{R. A. Mezei}, Appl. Math. Comput. 215, No. 5, 1718--1731 (2009; Zbl 1381.42028) Full Text: DOI
Anastassiou, G. A. Global smoothness and uniform convergence of smooth Picard singular operators. (English) Zbl 1089.47036 Comput. Math. Appl. 50, No. 10-12, 1755-1766 (2005). Reviewer: Vladimir N. Karpushkin (Moskva) MSC: 47G10 45P05 26A15 45L05 47A58 PDFBibTeX XMLCite \textit{G. A. Anastassiou}, Comput. Math. Appl. 50, No. 10--12, 1755--1766 (2005; Zbl 1089.47036) Full Text: DOI
Anastassiou, George A.; Gal, Sorin G. On global smoothness preservation in complex approximation. (English) Zbl 1013.30021 Ann. Pol. Math. 79, No. 3, 199-205 (2002). Reviewer: Eleonora Storozhenko (Odessa) MSC: 30E10 41A10 41A25 41A63 41A99 PDFBibTeX XMLCite \textit{G. A. Anastassiou} and \textit{S. G. Gal}, Ann. Pol. Math. 79, No. 3, 199--205 (2002; Zbl 1013.30021) Full Text: DOI
Anastassiou, George A. Differentiated shift-invariant integral operators, univariate case. (English) Zbl 0910.41016 Appl. Anal. 68, No. 3-4, 281-311 (1998). Reviewer: George A.Anastassiou (Memphis) MSC: 41A36 47B38 41A35 41A17 41A25 44A35 41A44 41A55 60E05 PDFBibTeX XMLCite \textit{G. A. Anastassiou}, Appl. Anal. 68, No. 3--4, 281--311 (1998; Zbl 0910.41016) Full Text: DOI
Anastassiou, George A.; Gonska, Heinz H. On some shift invariant integral operators, univariate case. (English) Zbl 0840.41016 Ann. Pol. Math. 61, No. 3, 225-243 (1995). MSC: 41A35 41A36 41A55 26A15 26A18 41A17 41A25 41A99 60E05 PDFBibTeX XMLCite \textit{G. A. Anastassiou} and \textit{H. H. Gonska}, Ann. Pol. Math. 61, No. 3, 225--243 (1995; Zbl 0840.41016) Full Text: DOI
Anastassiou, George A.; Gonska, Heinz H. On some shift-invariant integral operators, multivariate case. (English) Zbl 0848.45010 Anastassiou, George (ed.) et al., Approximation, probability, and related fields. Proceedings of a conference, Santa Barbara, CA, USA, May 20-22, 1993. New York, NY: Plenum. 41-63 (1994). MSC: 45P05 47G10 26B05 PDFBibTeX XMLCite \textit{G. A. Anastassiou} and \textit{H. H. Gonska}, in: Approximation, probability, and related fields. Proceedings of a conference, Santa Barbara, CA, USA, May 20-22, 1993. New York, NY: Plenum. 41--63 (1994; Zbl 0848.45010)