Precupanu, Teodor On a dual characterization in best approximation problem. (English) Zbl 1199.41160 Rev. Anal. Numér. Théor. Approx. 37, No. 2, 191-196 (2008). Reviewer: 1263 Tulsi Das Narang (Amritsar) MSC: 41A50 46B20 PDFBibTeX XMLCite \textit{T. Precupanu}, Rev. Anal. Numér. Théor. Approx. 37, No. 2, 191--196 (2008; Zbl 1199.41160)
Gheorghiu, C. I.; Trif, D. Direct and indirect approximations to positive solution for a nonlinear reaction-diffusion problem. II. Indirect approximation. (English) Zbl 1084.65529 Rev. Anal. Numér. Théor. Approx. 31, No. 2, 163-170 (2002). MSC: 65M20 65M12 37M99 65P40 PDFBibTeX XMLCite \textit{C. I. Gheorghiu} and \textit{D. Trif}, Rev. Anal. Numér. Théor. Approx. 31, No. 2, 163--170 (2002; Zbl 1084.65529)
Mustăţa, Costică On the metric projection and the quotient mapping. (English) Zbl 0855.41027 Rev. Anal. Numér. Théor. Approx. 24, No. 1-2, 191-199 (1995). Reviewer: S.Cobzaş (Cluj-Napoca) MSC: 41A65 PDFBibTeX XMLCite \textit{C. Mustăţa}, Rev. Anal. Numér. Théor. Approx. 24, No. 1--2, 191--199 (1995; Zbl 0855.41027)
Mustăţa, Costică On the selections associated to the metric projection. (English) Zbl 0814.41024 Rev. Anal. Numér. Théor. Approx. 23, No. 1, 89-93 (1994). Reviewer: C.Mustăţa (Cluj-Napoca) MSC: 41A65 PDFBibTeX XMLCite \textit{C. Mustăţa}, Rev. Anal. Numér. Théor. Approx. 23, No. 1, 89--93 (1994; Zbl 0814.41024)