JournalsemVol. 75, No. 1Volume 75, No. 1 (2020) Elemente der Mathematikpp. 1–14A unifying framework for generalizations of the Eneström–Kakeya theoremA. Melmanpp. 15–22Logical equivalence of the fundamental theorems on operators between Banach spacesFriederike LiebaugKarlheinz Spindlerpp. 23–31Mittelwerte als MinimaAlfred Schreiberpp. 32–36Inequalities of Levin–Stečkin, Clausing and Chebyshev revisitedAlfred Witkowskipp. 37–43Aufgabenp. 44Rezensionen
pp. 15–22Logical equivalence of the fundamental theorems on operators between Banach spacesFriederike LiebaugKarlheinz Spindler
