JournalsemVol. 75, No. 4Volume 75, No. 4 (2020) Elemente der Mathematikpp. 137–151Begegnung zwischen klassischen Mittelwerten und KegelschnittenJoachim Jägerpp. 152–165The irrationality measure of π as seen through the eyes of cos(n)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 as seen through the eyes of cos(n)Sully F. ChenErin P. J. Pearse
pp. 172–175On the Inequalities of Grüss–Čebyshev and Kantorovich: A Probabilistic ApproachLothar Heinrich
