Results 91 to 100 of about 2,745 (167)

Prime Structures in a Morita Context

open access: yes, 2018
In this paper, we study on the primeness and semiprimeness of a Morita context related to the rings and modules. Necessary and sufficient conditions are investigated for an ideal of a Morita context to be a prime ideal and a semiprime ideal.
Calci, Mete Burak   +3 more
core  

On nilpotent derivations of semiprime rings

open access: yesJournal of Algebra, 1992
AbstractIn this paper we study nilpotent derivations of semiprime rings. An associative derivation d: R → R is an additive mapping on a ring R satisfying d(xy) = d(x) y + xd(y) for all x, y ϵ R. A derivation d: R → R is called inner if d= ad x for some x ϵ R, where ad x(y) = xy − yx.
openaire   +2 more sources

Left centralizers on rings that are not semiprime

open access: yesRocky Mountain Journal of Mathematics, 2011
A (left) centralizer for an associative ring R is an additive map satisfying T(xy) = T(x)y for all x , y in R . A (left) Jordan centralizer for an associative ring R is an additive map satisfying T ( xy + yx ) = T ( x ) y + T ( y ) x for all x , y in R . We characterize rings with a Jordan centralizer T .
Hentzel, Irvin, El-Sayiad, M.S.
openaire   +4 more sources

Identities with derivations and automorphisms on semiprime rings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
The purpose of this paper is to investigate identities with derivations and automorphisms on semiprime rings. A classical result of Posner states that the existence of a nonzero centralizing derivation on a prime ring forces the ring to be commutative ...
Joso Vukman
doaj   +1 more source

Fuzzy bipolar soft semiprime ideals in ordered semigroups. [PDF]

open access: yesHeliyon, 2021
Aziz-Ul-Hakim, Khan H, Ahmad I, Khan A.
europepmc   +1 more source

On commutativity of rings with generalized derivations

open access: yesJournal of the Egyptian Mathematical Society, 2016
Let R be a prime ring, extended centroid C, Utumi quotient ring U, and m, n ≥ 1 are fixed positive integers, F a generalized derivation associated with a nonzero derivation d of R.
Nadeem ur Rehman   +2 more
doaj   +1 more source

A Note on Power Values of Derivation in Prime and Semiprime Rings

open access: yesJournal of Mathematical Extension, 2012
Let R be a ring with derivation d, such that (d(xy))n = (d(x))n (d(y))n for all x, y ∈ R and n > 1 a fixed integer. In this paper, we show that if R is prime, then d = 0 or R is commutative. If R is semiprime, then d maps R into its center. Moreover
Sh. Sahebi, V. Rahmani
doaj  

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