<p>Let <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\mathcal {R}\)</EquationSource> </InlineEquation> be a <i>n</i>!-torsion free semiprime ring and <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\Delta :\mathcal {R}^n\rightarrow \mathcal {R}\)</EquationSource> </InlineEquation> be a symmetric <i>n</i>-derivation with the trace <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(D:\mathcal {R}\rightarrow \mathcal {R}\)</EquationSource> </InlineEquation>. In this article we will study the following identities: <OrderedList> <ListItem> <ItemNumber>(1)</ItemNumber> <ItemContent> <p><InlineEquation ID="IEq4"> <EquationSource Format="TEX">\([D(s),D(t)]=\pm [s^n,t^n]\)</EquationSource> </InlineEquation>;</p> </ItemContent> </ListItem> <ListItem> <ItemNumber>(2)</ItemNumber> <ItemContent> <p><InlineEquation ID="IEq5"> <EquationSource Format="TEX">\([D(s),t^n]-[s^n,D(t)]=0\)</EquationSource> </InlineEquation>;</p> </ItemContent> </ListItem> <ListItem> <ItemNumber>(3)</ItemNumber> <ItemContent> <p><InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(D([s,t])=[D(s),t^n]\)</EquationSource> </InlineEquation>;</p> </ItemContent> </ListItem> <ListItem> <ItemNumber>(4)</ItemNumber> <ItemContent> <p><InlineEquation ID="IEq7"> <EquationSource Format="TEX">\( D(s)\circ D(t)=\pm s^n\circ t^n\)</EquationSource> </InlineEquation>;</p> </ItemContent> </ListItem> <ListItem> <ItemNumber>(5)</ItemNumber> <ItemContent> <p><InlineEquation ID="IEq8"> <EquationSource Format="TEX">\([D(s),D(t)]=\pm s^n\circ t^n\)</EquationSource> </InlineEquation>;</p> </ItemContent> </ListItem> <ListItem> <ItemNumber>(6)</ItemNumber> <ItemContent> <p><InlineEquation ID="IEq9"> <EquationSource Format="TEX">\( D(s)\circ D(t)=\pm [s^n,t^n]\)</EquationSource> </InlineEquation>;</p> </ItemContent> </ListItem> <ListItem> <ItemNumber>(7)</ItemNumber> <ItemContent> <p><InlineEquation ID="IEq10"> <EquationSource Format="TEX">\([D(s),D(t)]=\pm s^n t^n\)</EquationSource> </InlineEquation>;</p> </ItemContent> </ListItem> <ListItem> <ItemNumber>(8)</ItemNumber> <ItemContent> <p><InlineEquation ID="IEq11"> <EquationSource Format="TEX">\([D(s),D(t)]=\pm t^n s^n\)</EquationSource> </InlineEquation>;</p> </ItemContent> </ListItem> <ListItem> <ItemNumber>(9)</ItemNumber> <ItemContent> <p><InlineEquation ID="IEq12"> <EquationSource Format="TEX">\(D(s)D(t)=\pm [s^n,t^n]\)</EquationSource> </InlineEquation>;</p> </ItemContent> </ListItem> </OrderedList> for all <InlineEquation ID="IEq13"> <EquationSource Format="TEX">\(s,t\in \mathcal {R}\)</EquationSource> </InlineEquation>.</p>

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Study of symmetric n-derivations in semiprime and prime rings

  • Basudeb Dhara,
  • Sukhendu Kar,
  • Sourav Ghosh

摘要

Let \(\mathcal {R}\) be a n!-torsion free semiprime ring and \(\Delta :\mathcal {R}^n\rightarrow \mathcal {R}\) be a symmetric n-derivation with the trace \(D:\mathcal {R}\rightarrow \mathcal {R}\) . In this article we will study the following identities: (1)

\([D(s),D(t)]=\pm [s^n,t^n]\) ;

(2)

\([D(s),t^n]-[s^n,D(t)]=0\) ;

(3)

\(D([s,t])=[D(s),t^n]\) ;

(4)

\( D(s)\circ D(t)=\pm s^n\circ t^n\) ;

(5)

\([D(s),D(t)]=\pm s^n\circ t^n\) ;

(6)

\( D(s)\circ D(t)=\pm [s^n,t^n]\) ;

(7)

\([D(s),D(t)]=\pm s^n t^n\) ;

(8)

\([D(s),D(t)]=\pm t^n s^n\) ;

(9)

\(D(s)D(t)=\pm [s^n,t^n]\) ;

for all \(s,t\in \mathcal {R}\) .