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域上2×2上三角矩阵代数保幂等的映射 被引量:1

Maps on 2×2 Upper Triangular Matrix Algebras Preserving Idempotence over Fields
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摘要 设F为一个元素个数大于3的域,T2(F)为F上的2×2上三角矩阵代数,P2(F)={A∈T2(F):A2=A},所有满足如下条件的映射:T2(F)→T2(F),A-λB∈P2(F)(A)-λ(B)∈P2(F),A,B∈T2(F),λ∈F构成集合Φ,本文研究Φ中元素的形式. Suppose be an arbitrary field with at least 3 elements, T2(F) be2×2 upper triangular matrix algebras, P2(F) = {A ∈T2( F):A2 = A}. The set Φ based on the maps φ:T2( F)→T2(F) satisfies: A -λB∈ P2 (F)←→Φ(A) - λφ( B)∈ P2( F) , absolotely uneqvalto A,B∈ T2( F) ,λ∈ F.The maps of set φ are studied in this paper.
作者 薛婷婷 张玲
出处 《佳木斯大学学报(自然科学版)》 CAS 2006年第3期411-412,共2页 Journal of Jiamusi University:Natural Science Edition
关键词 幂等 映射 上三角矩阵代数 idempotenee map upper triangular matrix algebra field
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  • 1刘玉.关于2×2矩阵代数保立方幂等的单射[J].纯粹数学与应用数学,2007,23(2):255-261. 被引量:2
  • 2DOLINAR G. Maps on matrix algebras preserving idempotents [ J ]. Linear Algebra Appl,2003,371:287-300.
  • 3BHATIA R. Matrix analysis[M]. New York:Springer-Verlag,1997.
  • 4CONWAY J B. A course in functional analysis [ M ]. New York: Springer-Verlag, 1990.

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