Mediterranean Journal of Mathematics ( IF 1.1 ) Pub Date : 2021-03-18 , DOI: 10.1007/s00009-021-01714-8 N. Argaç , V. De Filippis
Let R be a prime ring of characteristic different from 2 with extended centroid C, \(n\ge 1\) a fixed positive integer, \(F, G:R\rightarrow R\) two non-zero generalized skew derivations of R.
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(I)
If \(\biggl (F(x)x\biggr )^n\in C\) for all \(x\in R\), then the following hold:
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(a)
if F is an inner generalized skew derivation, then either \(R\subseteq M_2(C)\) or R is commutative;
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(b)
if F is not an inner generalized skew derivation, then R is commutative.
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(a)
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(II)
If \([F(x)x,G(y)y]_n=0\) for all \(x,y\in R\), then R is commutative unless when \(char(R)=p > 0\), G is an inner generalized skew derivation and \(R\subseteq M_2(C)\).
中文翻译:
具有广义偏导数的素环的幂中心值和恩格尔条件
设R为质数为2的质环,质心为C,\(n \ ge 1 \)为固定的正整数,(F,G:R \ rightarrow R \)为R的两个非零广义偏导数。
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(一世)
如果对于所有\(x \ in R \)为\(\ biggl(F(x)x \ biggr)^ n \ in C \),则以下条件成立:
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(一个)
如果F是内部广义偏导数,则\(R \ subseteq M_2(C)\)或R是可交换的;
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(b)
如果F不是内部广义偏导数,则R是可交换的。
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(一个)
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(二)
如果\([F(x)的X,G(y)的Y] _n = 0 \)对于所有\(X,Y \中的R \) ,然后- [R是可交换的,除非当\(炭(R)= P> 0 \),G是内部广义偏导数和\(R \ subseteq M_2(C)\)。