• Title/Summary/Keyword: higher left derivations

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JORDAN HIGHER LEFT DERIVATIONS AND COMMUTATIVITY IN PRIME RINGS

  • Park, Kyoo-Hong
    • Journal of the Chungcheong Mathematical Society
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    • v.23 no.4
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    • pp.741-748
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    • 2010
  • Let R be a 2-torsionfree prime ring. Our goal in this note is to show that the existence of a nonzero Jordan higher left derivation on R implies R is commutative. This result is used to prove a noncommutative extension of the classical Singer-Wermer theorem in the sense of higher derivations.

HIGHER LEFT DERIVATIONS ON SEMIPRIME RINGS

  • Park, Kyoo-Hong
    • The Pure and Applied Mathematics
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    • v.17 no.4
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    • pp.355-362
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    • 2010
  • In this note, we extend the Bresar and Vukman's result [1, Proposition 1.6], which is well-known, to higher left derivations as follows: let R be a ring. (i) Under a certain condition, the existence of a nonzero higher left derivation implies that R is commutative. (ii) if R is semiprime, every higher left derivation on R is a higher derivation which maps R into its center.