Helene Stähelin
Helene Stähelin (18 July 1891 Wintersingen – 30 December 1970 Basel) was a Swiss mathematician, teacher, and peace activist. Between 1948 and 1967, she was president of the Swiss section of the Women's International League for Peace and Freedom and its representative in the Swiss Peace Council. Early life and scientific work She was one of twelve children of the parson Gustav Stähelin (1858–1934) and his wife Luise, née Lieb. In 1894, the family moved from Wintersingen to Allschwil. Helene Stähelin attended the Töchterschule Basel and the Universities Basel and Göttingen. In 1922, she became teacher of mathematics and natural sciences at the Töchterinstitut(de) in Ftan. In 1924, she obtained her Dr.phil. degree from Basel University for her dissertation Die charakteristischen Zahlen analytischer Kurven auf dem Kegel zweiter Ordnung und ihrer Studyschen Bildkurven, advised by Hans Mohrmann and . In 1926, she became a member of the Swiss Mathematical Society. Between 1934 and 1956, Helene Stähelin worked as teacher at the Protestant secondary school in Zug. After her pensioning she returned to Basel, where she assisted for several years to Otto Spiess' editing the Bernoulli family letters. Political activism Being a pacifist, Helene Stähelin committed herself to the Women's International