Z-POLYNOMIALS AND RING COMMUTATIVITY
- Mathematical Proceedings of the Royal Irish Academy
- Royal Irish Academy
- Volume 112A, Number 2, December 2012
- pp. 51-57
- Additional Information
We characterize polynomials f with integer coefficients such that a ring with unity R is necessarily commutative if f(x) is central for all x ∈ R. We also solve the corresponding problem without the assumption that the ring has a unity.