Life and work
Rohn studied in Darmstadt, Leipzig and Munich, initially engineering but then mathematics by the influence of Alexander von Brill, among the others. In 1878 he received a doctorate under the supervision of Felix Klein in Munich, and in 1879 he habilitated at Leipzig. The subject of his doctoral thesis and habilitation was the Kummer surfaces of order 4 and their relationship with hyperelliptic functions (with Riemann surfaces of genus 2). In 1884 he became an associate professor at the University of Leipzig and a year later at the Dresden University of Technology, where in 1887 he was a professor of descriptive geometry. In 1904 he became a professor at Leipzig.
In 1913 he was the president of the German Mathematical Society.
- Die verschiedenen Gestalten der Kummer'schen Fläche. In: Mathematische Annalen. 18. Band. Leipzig 1881, S. 99–159. (online)
- with Erwin Papperitz: Lehrbuch der Darstellenden Geometrie, 2 Bände, Leipzig 1893, 1896.
- with L. Berzolari: Algebraische Raumkurven und abwickelbare Flächen. In: Enzyklopädie der mathematischen Wissenschaften. Erschienen 1926. (online)
The original article was a Google translation of the corresponding German article.
- Karin Reich (2005), "Rohn, Karl", Neue Deutsche Biographie (NDB) (in German), 22, Berlin: Duncker & Humblot, pp. 2 – 3
- Siegfried Gottwald, Hans J. Ilgauds, Karl-Heinz Schlote (Eds): Encyclopedia of important mathematicians. Second Edition. Harri German, Frankfurt am Main 2006, ISBN 3-8171-1729-9.
- Friedrich Schur: Karl Rohn Nachruf. In: Jahresbericht der Deutschen Mathematiker-Vereinigung. 32. Band, Leipzig 1923, S. 201–211