Găvruţa, Paşc; Manolescu, Laura Approximation by cubic mappings. (English) Zbl 1447.39015 Brzdęk, Janusz (ed.) et al., Ulam type stability. Based on the conferences on Ulam type stability (CUTS), Cluj-Napoca, Romania, July 4–9, 2016 and Timisoara, Romania, October 8–13, 2018. Cham: Springer. 153-165 (2019). Reviewer: Mohammad Sajid (Buraidah) MSC: 39B52 39B82 39B12 PDFBibTeX XMLCite \textit{P. Găvruţa} and \textit{L. Manolescu}, in: Ulam type stability. Based on the conferences on Ulam type stability (CUTS), Cluj-Napoca, Romania, July 4--9, 2016 and Timisoara, Romania, October 8--13, 2018. Cham: Springer. 153--165 (2019; Zbl 1447.39015) Full Text: DOI
Găvruţa, Laura; Găvruţa, Paşc Approximation of functions by additive and by quadratic mappings. (English) Zbl 1370.41058 Rassias, Themistocles M. (ed.) et al., Mathematical analysis, approximation theory and their applications. Cham: Springer (ISBN 978-3-319-31279-8/hbk; 978-3-319-31281-1/ebook). Springer Optimization and Its Applications 111, 281-292 (2016). MSC: 41A65 39B82 PDFBibTeX XMLCite \textit{L. Găvruţa} and \textit{P. Găvruţa}, Springer Optim. Appl. 111, 281--292 (2016; Zbl 1370.41058) Full Text: DOI