Najdecki, Adam; Tabor, Józef Conditionally approximately convex functions. (English) Zbl 1335.26003 Demonstr. Math. 49, No. 1, 11-17 (2016). MSC: 26B25 52A41 PDFBibTeX XMLCite \textit{A. Najdecki} and \textit{J. Tabor}, Demonstr. Math. 49, No. 1, 11--17 (2016; Zbl 1335.26003) Full Text: DOI
Brzdȩk, Janusz; Najdecki, Adam; Xu, Bing Two general theorems on superstability of functional equations. (English) Zbl 1322.39011 Aequationes Math. 89, No. 3, 771-783 (2015). Reviewer: Jacek Chmieliński (Kraków) MSC: 39B82 39B42 39B62 PDFBibTeX XMLCite \textit{J. Brzdȩk} et al., Aequationes Math. 89, No. 3, 771--783 (2015; Zbl 1322.39011) Full Text: DOI
Najdecki, Adam; Tabor, Jacek; Tabor, Józef On conditionally \(\delta\)-convex functions. (English) Zbl 1224.26034 Acta Math. Hung. 128, No. 1-2, 131-138 (2010). Reviewer: Mihály Bessenyei (Debrecen) MSC: 26A51 39B82 PDFBibTeX XMLCite \textit{A. Najdecki} et al., Acta Math. Hung. 128, No. 1--2, 131--138 (2010; Zbl 1224.26034) Full Text: DOI