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Skew n-derivations on semiprime rings

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For a ring R with an automorphism σ, an n-additive mapping Δ: R × R × · · · × R ! R is called a skew n-derivation with respect to σ if it is always a σ-derivation of R for each argument. Namely, if n − 1 of the arguments are fixed, then Δ is a σ-derivation on the remaining argument. In this short note, from Breˇsar Theorems, we prove that a skew n-derivation (n ≥ 3) on a semiprime ring R must map into the center of R.

Abstract

For a ring R with an automorphism σ, an n-additive mapping Δ: R × R × · · · × R ! R is called a skew n-derivation with respect to σ if it is always a σ-derivation of R for each argument. Namely, if n − 1 of the arguments are fixed, then Δ is a σ-derivation on the remaining argument. In this short note, from Breˇsar Theorems, we prove that a skew n-derivation (n ≥ 3) on a semiprime ring R must map into the center of R.

참고문헌 (30)

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