• Title/Summary/Keyword: Semiprime-rings

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THE PROPERTIES OF JORDAN DERIVATIONS OF SEMIPRIME RINGS AND BANACH ALGEBRAS, I

  • Kim, Byung Do
    • Communications of the Korean Mathematical Society
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    • v.33 no.1
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    • pp.103-125
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    • 2018
  • Let R be a 5!-torsion free semiprime ring, and let $D:R{\rightarrow}R$ be a Jordan derivation on a semiprime ring R. Then $[D(x),x]D(x)^2=0$ if and only if $D(x)^2[D(x), x]=0$ for every $x{\in}R$. In particular, let A be a Banach algebra with rad(A) and if D is a continuous linear Jordan derivation on A, then we show that $[D(x),x]D(x)2{\in}rad(A)$ if and only if $D(x)^2[D(x),x]{\in}rad(A)$ for all $x{\in}A$ where rad(A) is the Jacobson radical of A.

COMMUTATORS AND ANTI-COMMUTATORS HAVING AUTOMORPHISMS ON LIE IDEALS IN PRIME RINGS

  • Raza, Mohd Arif;Alhazmi, Hussain
    • Korean Journal of Mathematics
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    • v.28 no.3
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    • pp.603-611
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    • 2020
  • In this manuscript, we discuss the relationship between prime rings and automorphisms satisfying differential identities involving commutators and anti-commutators on Lie ideals. In addition, we provide an example which shows that we cannot expect the same conclusion in case of semiprime rings.

ON DERIVATIONS IN NONCOMMUTATIVE SEMIPRIME RINGS AND BANACH ALGEBRAS

  • PARK, KYOO-HONG
    • Bulletin of the Korean Mathematical Society
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    • v.42 no.4
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    • pp.671-678
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    • 2005
  • Let R be a noncommutative semi prime ring. Suppose that there exists a derivation d : R $\to$ R such that for all x $\in$ R, either [[d(x),x], d(x)] = 0 or $\langle$$\langle(x),\;x\rangle,\;d(x)\rangle$ = 0. In this case [d(x), x] is nilpotent for all x $\in$ R. We also apply the above results to a Banach algebra theory.