Jakob Rosanes
Jakob Rosanes was a German mathematician who worked on algebraic geometry and invariant theory. He was also a chess master.
Rosanes studied at University of Berlin and the University of Breslau. He obtained his doctorate from Breslau in 1865 and taught there for the rest of his working life. He became professor in 1876 and rector of the university during the years 1903–1904.
Rosanes made significant contributions in Cremona transformations.