On a Certain Polish Mathematician: A Brief Summary of Scientific Research and Achievements of Kazimierz Nikodem, Professor of Mathematics

[1] K. Baron, J. Matkowski, and K. Nikodem, A sandwich with convexity, Math. Pannon. 5 (1994), no. 1, 139–144. Search in Google Scholar

[2] Gy. Maksa, K. Nikodem, and Zs. Páles, Results on t-Wright convexity, C. R. Math. Rep. Acad. Sci. Canada 13 (1991), no. 6, 274–278. Search in Google Scholar

[3] N. Merentes and K. Nikodem, Remarks on strongly convex functions, Aequationes Math. 80 (2010), no. 1–2, 193–199. Search in Google Scholar

[4] N. Merentes, K. Nikodem, and S. Rivas, Remarks on strongly Wright-convex functions, Ann. Polon. Math. 102 (2011), no. 3, 271–278. Search in Google Scholar

[5] K. Nikodem, On convex stochastic processes, Aequationes Math. 20 (1980), no. 2–3, 184–197. Search in Google Scholar

[6] K. Nikodem, On quadratic stochastic processes, Aequationes Math. 21 (1980), no. 2–3, 192–199. Search in Google Scholar

[7] K. Nikodem, Midpoint convex functions majorized by midpoint concave functions, Aequationes Math. 32 (1987), no. 1, 45–51. Search in Google Scholar

[8] K. Nikodem, On Jensen’s functional equation for set-valued functions, Rad. Mat. 3 (1987), no. 1, 23–33. Search in Google Scholar

[9] K Nikodem, K-convex and K-concave set-valued functions (Habilitation dissertation), Zeszyty Nauk. Politech. Łódz. Mat. 559 (Rozprawy Nauk. 114), Łódź, 1989, 75 pp. Search in Google Scholar

[10] K. Nikodem, On the support of midconvex operators, Aequationes Math. 42 (1991), no. 2–3, 182–189. Search in Google Scholar

[11] K. Nikodem, A characterization of quasi-arithmetic set-valued means, Linear Nonlinear Anal. 8 (2022), no. 2, 147–154. Search in Google Scholar

[12] K. Nikodem and C.T. Ng, On approximately convex functions, Proc. Amer. Math. Soc. 118 (1993), no. 1, 103–108. Search in Google Scholar

[13] K. Nikodem and Zs. Páles, Characterizations of inner product spaces by strongly convex functions, Banach J. Math. Anal. 5 (2011), no. 1, 83–87. Search in Google Scholar

[14] K. Nikodem and T. Rajba, Ohlin and Levin-Stečkin - type results for strongly convex functions, Ann. Math. Sil. 34 (2020), no. 1, 123–132. Search in Google Scholar

[15] K. Nikodem and Sz. Wąsowicz, A sandwich theorem and Hyers–Ulam stability of affine functions, Aequationes Math. 49 (1995), no. 1–2, 160–164. Search in Google Scholar