Abel, Ulrich; Ivan, Mircea; Păltănea, Radu The Durrmeyer variant of an operator defined by D.D. Stancu. (English) Zbl 1391.41011 Appl. Math. Comput. 259, 116-123 (2015). MSC: 41A36 41A60 41A25 41A35 41A10 PDFBibTeX XMLCite \textit{U. Abel} et al., Appl. Math. Comput. 259, 116--123 (2015; Zbl 1391.41011) Full Text: DOI
Abel, Ulrich; Gawronski, Wolfgang; Neuschel, Thorsten Complete monotonicity and zeros of sums of squared Baskakov functions. (English) Zbl 1338.41017 Appl. Math. Comput. 258, 130-137 (2015). MSC: 41A36 PDFBibTeX XMLCite \textit{U. Abel} et al., Appl. Math. Comput. 258, 130--137 (2015; Zbl 1338.41017) Full Text: DOI arXiv
Abel, Ulrich A complete asymptotic expansion for a sequence of certain sums. (English) Zbl 1217.40008 Appl. Math. Comput. 217, No. 8, 4302-4305 (2010). Reviewer: Antonio López-Carmona (Granada) MSC: 40D09 40A25 PDFBibTeX XMLCite \textit{U. Abel}, Appl. Math. Comput. 217, No. 8, 4302--4305 (2010; Zbl 1217.40008) Full Text: DOI