Let M be a \Gamma-ring and D a non-zero left derivation on M. We show that if there exists an element m in M such that D(m) is a right non-zero divisor, then M is commutative.
SAPANCI, M. and NAKAJIMAZ, A. (1996) "A NOTE ON GAMMA RINGS," Turkish Journal of Mathematics: Vol. 20: No. 4, Article 2. Available at: https://journals.tubitak.gov.tr/math/vol20/iss4/2