Matkowski, Janusz Means, generalized harmony proportion and applications. (English) Zbl 1462.26037 Colloq. Math. 160, No. 1, 109-118 (2020). Reviewer: József Sándor (Cluj-Napoca) MSC: 26E60 26A18 39B22 PDFBibTeX XMLCite \textit{J. Matkowski}, Colloq. Math. 160, No. 1, 109--118 (2020; Zbl 1462.26037) Full Text: DOI
Matkowski, Janusz Invariance identity in the class of generalized quasiarithmetic means. (English) Zbl 1320.26033 Colloq. Math. 137, No. 2, 221-228 (2014). Reviewer: Alfred Witkowski (Bydgoszcz) MSC: 26E60 26A18 39B22 PDFBibTeX XMLCite \textit{J. Matkowski}, Colloq. Math. 137, No. 2, 221--228 (2014; Zbl 1320.26033) Full Text: DOI
Matkowski, Janusz Generalized weighted quasi-arithmetic means and the Kolmogorov-Nagumo theorem. (English) Zbl 1312.26055 Colloq. Math. 133, No. 1, 35-49 (2013). Reviewer: Peter S. Bullen (Vancouver) MSC: 26E60 PDFBibTeX XMLCite \textit{J. Matkowski}, Colloq. Math. 133, No. 1, 35--49 (2013; Zbl 1312.26055) Full Text: DOI
Matkowski, Janusz A functional equation related to an equality of means problem. (English) Zbl 1220.39020 Colloq. Math. 122, No. 2, 289-298 (2011). Reviewer: János Aczél (Waterloo/Ontario) MSC: 39B22 26E60 PDFBibTeX XMLCite \textit{J. Matkowski}, Colloq. Math. 122, No. 2, 289--298 (2011; Zbl 1220.39020) Full Text: DOI Link
Matkowski, Janusz Affine and convex functions with respect to the logarithmic mean. (English) Zbl 1091.26023 Colloq. Math. 95, No. 2, 217-230 (2003). Reviewer: János Aczél (Waterloo/Ontario) MSC: 26E60 39B62 26B25 PDFBibTeX XMLCite \textit{J. Matkowski}, Colloq. Math. 95, No. 2, 217--230 (2003; Zbl 1091.26023) Full Text: DOI