Felice Casorati (mathematician)

Felice Casorati was an Italian mathematician born in Pavia on 17 December 1835, who died in Casteggio on 11 September 1890. The son of Francesco Casorati, a medical man who researched physiology at the University of Pavia, he first studied engineering and architecture and received a diploma in those subjects in 1856. He became a teaching assistant at Pavia in 1857, and in 1858 travelled with Betti and Brioschi to Göttingen, Berlin and Paris, a visit often taken as the point where Italian mathematics joined the European mainstream. He later held chairs at Pavia, taught in Milan between 1868 and 1875, and ended his career teaching analysis at Pavia. He wrote one major book, Teoria delle funzioni di variabili complesse, published in 1868, and 49 research papers. He is best remembered for the Casorati-Weierstrass theorem on the behaviour of an analytic function near an essential singularity, which his 1868 treatise had already included before Weierstrass published it.