Kim, Gwang Hui On the stability of functional equations on a square-symmetric groupoid. (English) Zbl 1224.39045 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 63, No. 5-7, e2559-e2568 (2005). MSC: 39B82 39B52 20L05 PDFBibTeX XMLCite \textit{G. H. Kim}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 63, No. 5--7, e2559--e2568 (2005; Zbl 1224.39045) Full Text: DOI
Kim, Gwang Hui Addendum to ‘On the stability of functional equations on square-symmetric groupoid’. (English) Zbl 1112.39022 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 62, No. 2, 365-381 (2005). MSC: 39B82 39B52 39B72 PDFBibTeX XMLCite \textit{G. H. Kim}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 62, No. 2, 365--381 (2005; Zbl 1112.39022) Full Text: DOI
Kim, Gwang Hui On the Hyers-Ulam-Rassias stability of functional equations in \(n\)-variables. (English) Zbl 1064.39028 J. Math. Anal. Appl. 299, No. 2, 375-391 (2004). Reviewer: Paşc Găvruţă (Timişoara) MSC: 39B82 33B15 39B72 PDFBibTeX XMLCite \textit{G. H. Kim}, J. Math. Anal. Appl. 299, No. 2, 375--391 (2004; Zbl 1064.39028) Full Text: DOI