JournalsemVol. 75, No. 4Elemente der MathematikVolume 75, No. 4 (2020) pp. 137–151Begegnung zwischen klassischen Mittelwerten und KegelschnittenJoachim Jägerpp. 152–165The irrationality measure of π\piπ as seen through the eyes of cos(nnn)Sully F. ChenErin P. J. Pearsepp. 166–171An inequality for cevians and applicationsMartin LukarevskiDan Ștefan Marinescupp. 172–175On the Inequalities of Grüss–Čebyshev and Kantorovich: A Probabilistic ApproachLothar Heinrichpp. 176–179Aufgabenpp. 180–182Rezensionen
pp. 152–165The irrationality measure of π\piπ as seen through the eyes of cos(nnn)Sully F. ChenErin P. J. Pearse
pp. 172–175On the Inequalities of Grüss–Čebyshev and Kantorovich: A Probabilistic ApproachLothar Heinrich
