Additive maps on rings behaving like derivations at idempotent-product elements

Additive maps on rings behaving like derivations at idempotent-product elements
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环上的加法映射表现得像幂等积元素的导数

DOI:
10.1016/j.jpaa.2010.10.017
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发表时间:
2011-08
影响因子:
0.8
通讯作者:
An, Runling
An, Runling
中科院分区:
数学2区
文献类型:
--
作者:
Hou, Jinchuan;An, Runling

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对单位I含有非平凡幂等元P的环R,刻画了R到自身的加法映射δ,证明了这类环上的导子可由A,B∈R上的作用决定,其中AB=0,AB=P,AB=I. An和Hou [R. An,J. Hou,Characterizations of derivations on triangular rings:additive maps derivable at immpotents,Linear Algebra Appl.431(2009)1070-1080],Bres J. Bres Brachar,刻画具有幂等元的环中的同态、乘子和导子,Proc. Roy。爱丁堡大学。A组137(2007)9-21]和Chebotar et al. [硕士切博塔尔,W. F. Ke,P.- H. Lee,Maps characterized by action on zero products,Pacific J.Math.216(2)2004 217-228]。
For every ring R with the unit I containing a nontrivial idempotent P, we describe the additive maps δ from R into itself which behave like derivations, and show that derivations on such kinds of rings can be determined by the action on the elements A,B∈R with AB=0, AB=P and AB=I respectively. Those results of An and Hou [R. An, J. Hou, Characterizations of derivations on triangular rings: additive maps derivable at idempotents, Linear Algebra Appl. 431 (2009) 1070–1080], Bres˘ar [M. Bres˘ar, Characterizing homomorphisms, multipliers and derivations in rings with idempotents, Proc. Roy. Soc. Edinburgh. Sect. A. 137 (2007) 9–21] and Chebotar et al. [M.A. Chebotar, W.-F. Ke, P.-H. Lee, Maps characterized by action on zero products, Pacific J. Math. 216 (2) 2004 217–228] are improved.
DOI: 10.1112/s0024610700001642
发表时间: 2001-02
期刊: Journal of the London Mathematical Society
影响因子: --
作者:
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