Issai Schur

Issai Schur
Born	(1875-01-10)10 January 1875 Mogilev, Russian Empire
Died	10 January 1941(1941-01-10) (aged 66) Tel Aviv, Mandatory Palestine
Known for	Schur decomposition Schur's lemma Schur complement
Scientific career
Fields	Mathematics
Doctoral advisor	Georg Frobenius Lazarus Fuchs
Doctoral students	Richard Brauer Robert Frucht Maximilian Herzberger Eberhard Hopf Bernhard Neumann Rose Peltesohn Heinz Prüfer Richard Rado Isaac Jacob Schoenberg Arnold Scholz Wilhelm Specht Karl Dörge Wolfgang Hahn

Issai Schur (10 January 1875 – 10 January 1941^[1]) was a Russian mathematician who worked in Germany for most of his life. He studied at the University of Berlin. He obtained his doctorate in 1901, became lecturer in 1903 and, after a stay at the University of Bonn, professor in 1919.

As a student of Ferdinand Georg Frobenius, he worked on group representations (the subject with which he is most closely associated), but also in combinatorics and number theory and even theoretical physics. He is perhaps best known today for his result on the existence of the Schur decomposition and for his work on group representations (Schur's lemma).

Schur published under the name of both I. Schur, and J. Schur, the latter especially in Journal für die reine und angewandte Mathematik. This has led to some confusion.^[2]