Johannes Knoblauch

Johannes Knoblauch (27 August 1855, Halle (Saale) – 22 July 1915, Berlin) was a German mathematician.

Biography Johannes Knoblauch, whose father was the physics professor Karl Hermann Knoblauch, studied law, mathematics and physics from 1872 in Halle, Heidelberg and Berlin. At the Friedrich Wilhelm University (later renamed the Humboldt University of Berlin) he studied from 1874 to 1878 and from 1880 to 1883 and received his Promotion (Ph.D.) in 1882 and his Habilitation in 1883. His doctoral dissertation "Ueber die Allgemeine Wellenfläche" was supervised by Karl Weierstrass. Knoblauch was a teacher for the academic year 1878–1879 at (his former school) the state Gymnasium in Halle and from 1879 to 1880 at Berlin's Gymnasium zum Grauen Kloster. At the Friedrich Wilhelm University of Berlin, after his Habilitation in 1883 he was appointed Privatdozent. There in 1889 he was appointed professor extraordinarius and retained that academic post until his death. In 1906/07 Knoblauch worked with Kazimierz Żorawski on new group theoretical methods.

Knoblauch was a founding member of the Berlin Mathematical Society. For 13 years he was a member of the editorial board of the Crelle's Journal.

In 1884, he married Luise née Eyssenhardt (1865–1940).

Selected publications Theorie der algebraischen Curven und Flächen höherer Ordnung. 1885 Einleitung in die allgemeine Theorie der krummen Flächen. 1888 Grundlagen der Differentialgeometrie. 1913 Ueber Biegungscovarianten. 1892. Vorlesungen über die Theorie der Elliptischen Functionen. 1913 Die Biegungs-Invarianten und Kovarianten von gegebener Ordnung. 1906. Ein Bildnis Leonhard Eulers in Privatbesitz. 1911 Die Differentialgleichung der Flächen mit isometrischen Krümmungslinien. 1912 As an editor Mathematische Werke von Karl Weierstrass, edited by Johannes Knoblauch, Georg Hettner, and Rudolf Rothe Abhandlungen-1, Math. Werke. vol. 1. Berlin, 1894 Abhandlungen-2, Math. Werke. vol. 2. Berlin, 1895 Abhandlungen-3, Math. Werke. vol. 3. Berlin, 1903 Vorl. ueber die Theorie der Abelschen Transcendenten, Math. Werke. Bd. 4. Berlin, 1902 Vorl. ueber Variationsrechnung, Math. Werke. vol. 7. Leipzig, 1927