# Julius Plücker

## Julius Plücker was the first professor for mathematics at the university of Bonn.

Julius Plücker (1801-1868) became the first professor for mathematics at the University of Bonn. At times, he also held the chair for physics and later focused solely on it. Plücker worked in Bonn from his appointment as a full professor in 1836 until his death in 1868.

To mathematicians he is known for his work in projective and analytic geometry; the Plücker coordinates can be found in any textbook on algebraic geometry. But he also contributed substantially to physics by discovering the cathode rays. His most famous student was Felix Klein. Unfortunately, Plücker died just when Klein was about to start his dissertation, which he then wrote under the supervision of Alfred Clebsch. His local examiner in Bonn became Rudolph Lipschitz.