JournalsemVol. 72, No. 1Volume 72, No. 1 (2017) Elemente der Mathematikp. 1Editorial noteNorbert Hungerbühlerpp. 2–8An alternate proof of Gerretsen’s inequalitiesMartin Lukarevskipp. 9–14Density property of certain sets and their applicationsManas R. Sahoopp. 15–23Alternative investigation into “Surprising sinc sums and integrals”Zouhir Bahripp. 24–34The AM-GM inequality from different viewpointsDarko Veljanpp. 35–38From Pappus to Kocik’s diagram for relativistic velocity additionGerhard Wannerpp. 39–43Aufgabenp. 44Rezensionen