H KOMATSU, T NISHINAKA, H TOMINAGA
BULLETIN OF THE AUSTRALIAN MATHEMATICAL SOCIETY, 44(3) 387-389, Dec, 1991 Peer-reviewedLead authorCorresponding author
We prove the following theorem: Let R be a ring, l a positive integer, and n a non-negative integer. If for each x, y is-an-element-of R, either xy = yx or xy = x(n) f(y)x(l) for some f(X) is-an-element-of X2Z[X], then R is commutative.