Leo Koenigsberger
Leo Koenigsberger was a German mathematician, and historian of science. He is best known for his three-volume biography of Hermann von Helmholtz, which remains the standard reference on the subject.
Biography
Leo Koenigsberger was born in 1837 in Posen to the wealthy merchant Jakob Löb and Henriette Kantorowicz and had eleven siblings. He studied at the University of Berlin with Karl Weierstrass, where he taught mathematics and physics. He taught at the University of Greifswald, the University of Heidelberg, the Technische Universität Dresden, and the University of Vienna before returning to Heidelberg in 1884, where remained until his retirement in 1914.Whilst at Heidelberg he was elected to honorary membership of the Manchester Literary and Philosophical Society on 17 April 1895
In 1904 he was a Plenary Speaker of the ICM in Heidelberg. In 1919 he published his autobiography, Mein Leben. The biography of Helmholtz was published in 1902 and 1903. He also wrote a biography of C. G. J. Jacobi.
Koenigsberger's own research was primarily on elliptic functions and differential equations. He worked closely with Lazarus Fuchs, a childhood friend.
In 1873, he married in Heidelberg Sophie Beral-Kappel, daughter of the merchant Iwanowitsch Beral of Kharkov and Anna Grigoriewna Tschaikowski. They had a son and a daughter, Johann Koenigsberger, professor of physics in Freiburg, and Ani Koenigsberger.