If \(R\) is a ring and \(M\) is a simple \(R\)-module, then \(\operatorname {End}_R(M)\) is a division ring.
Question
Math 6310 • Algebra
Fall 1994 • Question 7
Question
Fall 1994 • Question 7
If \(R\) is a ring and \(M\) is a simple \(R\)-module, then \(\operatorname {End}_R(M)\) is a division ring.