Abstract
Let 𝒯 be a triangular algebra over a 2-torsion free commutative ring R. In this article, under some mild conditions on 𝒯, we prove that if δ: 𝒯 → 𝒯 is a nonlinear mapping satisfying
Acknowledgements
The authors thank the referee for the very thorough reading of this article and many helpful comments. The first author is supported by the National Natural Science Foundation Grants of China (10971117).