Park, Choonkil; Tareeghee, Mohammad Amin; Najati, Abbas; Yengejeh, Yavar Khedmati; Paokanta, Siriluk Asymptotic behavior of Fréchet functional equation and some characterizations of inner product spaces. (English) Zbl 07761154 Demonstr. Math. 56, Article ID 20230265, 13 p. (2023). Reviewer: Jacek Chmieliński (Kraków) MSC: 39B52 39B62 39B82 46C15 PDFBibTeX XMLCite \textit{C. Park} et al., Demonstr. Math. 56, Article ID 20230265, 13 p. (2023; Zbl 07761154) Full Text: DOI OA License
Choi, Ginkyu; Jung, Soon-Mo Hyers-Ulam stability of isometries on bounded domains. II. (English) Zbl 1512.39028 Demonstr. Math. 56, Article ID 20220196, 12 p. (2023). MSC: 39B82 39B62 46B04 46B07 PDFBibTeX XMLCite \textit{G. Choi} and \textit{S.-M. Jung}, Demonstr. Math. 56, Article ID 20220196, 12 p. (2023; Zbl 1512.39028) Full Text: DOI
Park, Won-Gil; Bae, Jae-Hyeong Approximate property of a functional equation with a general involution. (English) Zbl 1404.39033 Demonstr. Math. 51, 304-308 (2018). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 39B82 39B62 41A60 46B06 PDFBibTeX XMLCite \textit{W.-G. Park} and \textit{J.-H. Bae}, Demonstr. Math. 51, 304--308 (2018; Zbl 1404.39033) Full Text: DOI
Mitroi, Flavia-Corina; Nikodem, Kazimierz; Wąsowicz, Szymon Hermite-Hadamard inequalities for convex set-valued functions. (English) Zbl 1292.26072 Demonstr. Math. 46, No. 4, 655-662 (2013). MSC: 26E25 28B20 54C60 39B62 PDFBibTeX XMLCite \textit{F.-C. Mitroi} et al., Demonstr. Math. 46, No. 4, 655--662 (2013; Zbl 1292.26072) Full Text: DOI
Mercer, A. McD.; Mercer, Peter R. On the sign of \(L(f)\) and its “error term” when \(f\) is an \(n\)-convex function. (English) Zbl 1225.26058 Demonstr. Math. 44, No. 2, 223-231 (2011). MSC: 26D20 39B62 PDFBibTeX XMLCite \textit{A. McD. Mercer} and \textit{P. R. Mercer}, Demonstr. Math. 44, No. 2, 223--231 (2011; Zbl 1225.26058) Full Text: DOI
Lewicki, Michał A remark on quasiaffine functions. (English) Zbl 1128.39020 Demonstr. Math. 39, No. 4, 743-750 (2006). Reviewer: Sanford L. Segal (Rochester) MSC: 39B62 PDFBibTeX XMLCite \textit{M. Lewicki}, Demonstr. Math. 39, No. 4, 743--750 (2006; Zbl 1128.39020) Full Text: DOI
Chudziak, Jacek Stability of the homogeneous equation. (English) Zbl 0931.39016 Demonstr. Math. 31, No. 4, 765-772 (1998). Reviewer: Stefan Czerwik (Gliwice) MSC: 39B82 39B62 39B52 PDFBibTeX XMLCite \textit{J. Chudziak}, Demonstr. Math. 31, No. 4, 765--772 (1998; Zbl 0931.39016) Full Text: DOI
Midura, Stanisław On solutions of some system of functional equations. (English) Zbl 0913.39018 Demonstr. Math. 31, No. 2, 299-304 (1998). Reviewer: P.Talpalaru (Iaşi) MSC: 39B62 PDFBibTeX XMLCite \textit{S. Midura}, Demonstr. Math. 31, No. 2, 299--304 (1998; Zbl 0913.39018) Full Text: DOI
Midura, Stanislaw On solutions of systems of functional equations determining some subsemigroups of the group \(L_6^1\). (English) Zbl 0896.39010 Demonstr. Math. 29, No. 3, 579-590 (1996). MSC: 39B52 39B62 20M25 PDFBibTeX XMLCite \textit{S. Midura}, Demonstr. Math. 29, No. 3, 579--590 (1996; Zbl 0896.39010) Full Text: DOI
Midura, Stanisław Sur les solutions des équations fonctionnelles qui déterminent certains sous-demi-groupes à deux paramètres du groupe \(L_ 4^ 1\). (Solution of functional equations which determine certain sub-semigroups with two parameters of the group \(L_ 4^ 1)\). (French) Zbl 0718.39006 Demonstr. Math. 23, No. 1, 69-81 (1990). Reviewer: J.Aczél (Waterloo / Ontario) MSC: 39B62 39B22 53A55 22A15 PDFBibTeX XMLCite \textit{S. Midura}, Demonstr. Math. 23, No. 1, 69--81 (1990; Zbl 0718.39006) Full Text: DOI
Zakowski, Wojciech On some class of systems of nonlinear processes with a memory. (English) Zbl 0542.93036 Demonstr. Math. 15, 549-561 (1982). Reviewer: N.Luca MSC: 93C30 39B62 93C10 39B52 PDFBibTeX XMLCite \textit{W. Zakowski}, Demonstr. Math. 15, 549--561 (1982; Zbl 0542.93036)
Kominek, Zygfryd On the functional equation phi(x)=h(x,phi[f(x)]). (English) Zbl 0507.39004 Demonstr. Math. 14, 1031-1045 (1981). MSC: 39B62 PDFBibTeX XMLCite \textit{Z. Kominek}, Demonstr. Math. 14, 1031--1045 (1981; Zbl 0507.39004) Full Text: DOI