• Title/Summary/Keyword: Derivations

Search Result 459, Processing Time 0.024 seconds

Continuity of Higher Derivations on Some Semiprime Banach Algebras

  • Lee, Young-Whan
    • Journal of the Chungcheong Mathematical Society
    • /
    • v.2 no.1
    • /
    • pp.37-44
    • /
    • 1989
  • In this paper, it is shown that automatic continuity of derivations on some semi prime Banach algebras can be extended to higher derivations. In particular, we show that if every prime ideal is closed in a commutative semi prime Banach algebra then every higher derivation on it is continuous.

  • PDF

ON ORTHOGONAL REVERSE DERIVATIONS OF SEMIPRIME 𝚪-SEMIRINGS

  • Kim, Kyung Ho
    • Journal of the Chungcheong Mathematical Society
    • /
    • v.35 no.2
    • /
    • pp.115-124
    • /
    • 2022
  • In this paper, we introduce the notion of orthogonal reserve derivation on semiprime 𝚪-semirings. Some characterizations of semiprime 𝚪-semirimgs are obtained by means of orthogonal reverse derivations. We also investigate conditions for two reverse derivations on semiprime 𝚪-semiring to be orthogonal.

JORDAN HIGHER DERIVATIONS ON TRIVIAL EXTENSION ALGEBRAS

  • Vishki, Hamid Reza Ebrahimi;Mirzavaziri, Madjid;Moafian, Fahimeh
    • Communications of the Korean Mathematical Society
    • /
    • v.31 no.2
    • /
    • pp.247-259
    • /
    • 2016
  • We first give the constructions of (Jordan) higher derivations on a trivial extension algebra and then we provide some sufficient conditions under which a Jordan higher derivation on a trivial extension algebra is a higher derivation. We then proceed to the trivial generalized matrix algebras as a special trivial extension algebra. As an application we characterize the construction of Jordan higher derivations on a triangular algebra. We also provide some illuminating examples of Jordan higher derivations on certain trivial extension algebras which are not higher derivations.

REMARKS ON GENERALIZED (α, β)-DERIVATIONS IN SEMIPRIME RINGS

  • Hongan, Motoshi;ur Rehman, Nadeem
    • Communications of the Korean Mathematical Society
    • /
    • v.32 no.3
    • /
    • pp.535-542
    • /
    • 2017
  • Let R be an associative ring and ${\alpha},{\beta}:R{\rightarrow}R$ ring homomorphisms. An additive mapping $d:R{\rightarrow}R$ is called an (${\alpha},{\beta}$)-derivation of R if $d(xy)=d(x){\alpha}(y)+{\beta}(x)d(y)$ is fulfilled for any $x,y{\in}R$, and an additive mapping $D:R{\rightarrow}R$ is called a generalized (${\alpha},{\beta}$)-derivation of R associated with an (${\alpha},{\beta}$)-derivation d if $D(xy)=D(x){\alpha}(y)+{\beta}(x)d(y)$ is fulfilled for all $x,y{\in}R$. In this note, we intend to generalize a theorem of Vukman [5], and a theorem of Daif and El-Sayiad [2].

DERIVATIONS OF UP-ALGEBRAS

  • Sawika, Kaewta;Intasan, Rossukon;Kaewwasri, Arocha;Iampan, Aiyared
    • Korean Journal of Mathematics
    • /
    • v.24 no.3
    • /
    • pp.345-367
    • /
    • 2016
  • The concept of derivations of BCI-algebras was first introduced by Jun and Xin. In this paper, we introduce the notions of (l, r)-derivations, (r, l)-derivations and derivations of UP-algebras and investigate some related properties. In addition, we define two subsets $Ker_d(A)$ and $Fix_d(A)$ for some derivation d of a UP-algebra A, and we consider some properties of these as well.

SOME CONDITIONS ON DERIVATIONS IN PRIME NEAR-RINGS

  • Cho, Yong-Uk
    • The Pure and Applied Mathematics
    • /
    • v.8 no.2
    • /
    • pp.145-152
    • /
    • 2001
  • Posner [Proc. Amer. Math. Soc. 8 (1957), 1093-1100] defined a derivation on prime rings and Herstein [Canad, Math. Bull. 21 (1978), 369-370] derived commutative property of prime ring with derivations. Recently, Bergen [Canad. Math. Bull. 26 (1983), 267-227], Bell and Daif [Acta. Math. Hunger. 66 (1995), 337-343] studied derivations in primes and semiprime rings. Also, in near-ring theory, Bell and Mason [Near-Rungs and Near-Fields (pp. 31-35), Proceedings of the conference held at the University of Tubingen, 1985. Noth-Holland, Amsterdam, 1987; Math. J. Okayama Univ. 34 (1992), 135-144] and Cho [Pusan Kyongnam Math. J. 12 (1996), no. 1, 63-69] researched derivations in prime and semiprime near-rings. In this paper, Posner, Bell and Mason's results are extended in prime near-rings with some conditions.

  • PDF