Issai Schur

Personal life
Issai Schur (January 10, 1875 - January 10, 1941) was a mathematician who worked in Germany for most of his life (though he was of Russian origin).

Professional life

 * 1901: Obtained his Ph.D. (Berlin)
 * 1903: Became a lecturer
 * 1919: Became a Professor

Group theory
Along with Frobenius (his advisor), Schur laid the foundations of linear representations of groups. His famous Schur's lemma is critical to the proof of the orthogonality relations for finite groups.

Terms

 * Schur multiplier
 * Schur indicator

Results

 * Schur's lemma
 * Schur's theorem

Advisor
Schur's advisor was advisor::Ferdinand Georg Frobenius.

Students

 * Richard Brauer
 * Heinz Prufer
 * B. H. Neumann