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On trace of symmetric bi-gamma-derivations in gamma-near-rings
(Univ Houston, 2007) Uckun, Mustafa; Oeztuerk, Mehmet Ali
Let M be a 2-torsion free 3-prime left Gamma-near-ring with multiplicative center C. For x is an element of M, let C(x) be the centralizer of x in M. The aim of this paper is to study the trace of symmetric bi-Gamma-derivations (also symmetric bi-generalized Gamma-derivations) on M. Main results are the following theorems: Let D(.,.) be a non-zero symmetric bi-Gamma-derivation of M and F(.,.) a symmetric bi-additive mapping of M. Let d and f be traces of D(.,.) and F(.,.), respectively. In this case (1) If d(M) subset of C, then M is a commutative ring. (2) If d(y), d(y) + d(y) is an element of C(D(x, z)) for all x, Y, z is an element of M, then M is a commutative ring. (3) If F(.,.) is a non-Zero symmetric bigeneralized Gamma-derivation of M associated with D(.,.) and f(M) C C, then M is a commutative ring. (4) If F(.,.) is a non-zero symmetric bi-generalized Gamma-derivation of M associated with D(.,.) and f(y), f(y) +,f(y) is an element of C(D(x, z)) for all X, y, z is an element of M, then M is a commutative ring.