Nilpotency of derivations. II
Authors: L. O. Chung and Jiang Luh
Journal: Proc. Amer. Math. Soc. 91 (1984), 357-358
MSC: Primary 16A72; Secondary 16A12
MathSciNet review: 744628
Full-text PDF Free Access
Abstract: The authors recently proved that for a semiprime ring without -torsion, a nilpotent derivation must have odd nilpotency. In this paper, we show the intriguing phenomenon that for a semiprime ring with characteristic 2, the nilpotency of a nilpotent derivation must be of the form . Combining these two results, we show that for a general semiprime ring with no torsion condition, the nilpotency of a nilpotent derivation is either odd or a power of 2.