Walter Gröbli
Walter Gröbli (1852–1903) was a Swiss mathematician. Life and work. His father, Issak Gröbli, was an industrial who was invented a shuttle embroidery machine in 1863, and his old brother is credited to have introduced the invention in the United States. Walter Gröbli was more interested in mathematics than in embroidery and he studied from 1871 to 1875 at the Polytechnicum of Zurich under Hermann Schwarz and Heinrich Martin Weber. Then Gröbli studied at university of Berlin and he was awarded a doctorate in the university of Göttingen (1877). The following six years, Gröbli was assistant of Frobenius  in Polytechnicum of Zurich. In 1883 he was elected mathematics professor in the "Gymnasium" of Zurich. Despite his mathematical talent he did not follow a research career, he was happy to be a schoolmaster. His other main passion was mountaineering. He died with other three colleagues on a mountain accident climbing the Piz Blas. The only work known by Gröbli was his doctoral thesis dissertation. It deals about three vortex motion, four vortex motion having an axis of symmetry and formula_1 vortex motion having formula_2 symmetry axes. This work is a classical in vortex dynamics literature.