Beitr Algebra Geom
DOI 10.1007/s13366-015-0246-6
ORIGINAL PAPER
On Lie higher derivable mappings on prime rings
Mohammad Ashraf
1
· Nazia Parveen
1
Received: 10 November 2014 / Accepted: 25 March 2015
© The Managing Editors 2015
Abstract Let R be a prime ring containing a nontrivial idempotent. We say that a fam-
ily of maps D ={d
n
}
n∈N
is a Lie higher derivable map (without assumption of addi-
tivity) if d
0
= id
R
(the identity map on R) and d
n
([a, b]) =
∑
p+q =n
[d
p
(a), d
q
(b)]
for all a, b ∈ R and for all n ∈ N. In the present paper it is shown that if D is a Lie
higher derivable then there exists an element z
a,b
(depending on a and b) in its center
Z ( R) such that d
n
(a + b) = d
n
(a) + d
n
(b) + z
a,b
.
Keywords Prime ring · Derivations · Higher derivation · Lie derivable maps
Mathematics Subject Classification 16W25 · 16N60 · 16U80
1 Introduction
Let R be a ring. An additive mapping d : R → R is said to be a derivation (resp. Lie
derivation) if d (ab) = d (a)b + ad (b) (resp. d ([a, b]) =[d (a), b]+[a, d (b)]), holds
true for all a, b ∈ R, where [a, b]= ab - ba is the usual Lie product of a and b. It is
not difficult to observe that any derivation is a Lie derivation. However, the converse
statement is in general not true, which can be seen by the example: let d : R → R be
a derivation and g : R → Z ( R) be an additive mapping with g([ R, R]) = 0. Then
d + g is a Lie derivation, which is not a derivation. Also an additive map d : R → R
is said to be Jordan derivation if d (ab + ba) = d (a)b + ad (b) + d (b)a + bd (a), holds
for all a, b ∈ R.
B Mohammad Ashraf
mashraf80@hotmail.com
Nazia Parveen
naziamath@gmail.com
1
Department of Mathematics, Aligarh Muslim University, Aligarh 202002, India
123