English

Skew $N$-Derivations on Semiprime Rings

Rings and Algebras 2012-06-18 v1

Abstract

For a ring RR with an automorphism σ\sigma, an nn-additive mapping Δ:R×R×...×RR\Delta:R\times R\times... \times R \rightarrow R is called a skew nn-derivation with respect to σ\sigma if it is always a σ\sigma-derivation of RR for each argument. Namely, it is always a σ\sigma-derivation of RR for the argument being left once n1n-1 arguments are fixed by n1n-1 elements in RR. In this short note, starting from Bre\v{s}ar Theorems, we prove that a skew nn-derivation (n3n\geq 3) on a semiprime ring RR must map into the center of RR.

Keywords

Cite

@article{arxiv.1206.3396,
  title  = {Skew $N$-Derivations on Semiprime Rings},
  author = {Xiaowei Xu and Yang Liu and Wei Zhang},
  journal= {arXiv preprint arXiv:1206.3396},
  year   = {2012}
}

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8 pages