JournalsemVol. 73, No. 4Volume 73, No. 4 (2018) Elemente der Mathematikpp. 145–150Calculus style proof of Poncelet’s theorem for two ellipsesAleksander Simoničpp. 151–160The Lucas property for linear recurrences of second orderCarsten ElsnerJürgen Spilkerpp. 161–169Walking on rational numbers and a self-referential formulaMargaret FortmanKevin KupiecMarina RawlingsEnrique Treviñopp. 170–178How to find your soulmate: Set your goal vs. aim at dating sitesTamás Lengyelpp. 179–181F. Commandino, de centro gravitatis solidorum, 1565Gerhard Wannerpp. 182–186Aufgabenpp. 187–188Rezensionen
pp. 161–169Walking on rational numbers and a self-referential formulaMargaret FortmanKevin KupiecMarina RawlingsEnrique Treviño