Zygfryd Kominek, a Mathematician, a Teacher, a Friend

Published Online: Jul 09, 2020

Page range: 1 - 26

Received: Apr 21, 2020

Accepted: Jun 07, 2020

DOI: https://doi.org/10.2478/amsil-2020-0016

Keywords

Steinhaus and Piccard type theorems, Smítal’s Lemma, functional equations, semilinear topology, stability in the sense of Hyers-Ulam, subquadratic functions, Jensen equation and inequality, Wright convexity, Hosszú equation, Cauchy equation, separation theorems, alienation

© 2020 Maciej Sablik, published by Sciendo

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