. . . . . . . "Wilhelm Karl Joseph Killing"@en . . . . . . "1847-05-10Z"^^ . . . "1923-02-11Z"^^ . . "Wilhelm Karl Joseph Killing (May 10, 1847\u2013 February 11, 1923) was a German mathematician who made important contributions to the theories of Lie algebras, Lie groups, and non-Euclidean geometry.Killing studied at the University of M\u00FCnster and later wrote his dissertation under Karl Weierstrass and Ernst Kummer at Berlin in 1872. He taught in gymnasia (secondary schools) from 1868 to 1872. He became a professor at the seminary college Collegium Hosianum in Braunsberg (now Braniewo)."@en . .