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B(H)上的广义零点Lie可导映射

Generalized Lie Derivable Maps at Zero of B(H)
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摘要 设B(H)是维数大于2的复可分Hilbert空间,B(H)代表H上所有有界线性算子全体,假设线性映射Ф:B(H)→B(H)满足对所有A,B∈B(H),[A^A.,B]=0时,有[Ф(A)^Ф(A).,B]+[A^A.,Ф(B)]=0.文中运用可交换迹双线性映射对Ф进行了刻画,证明了存在实数c∈R,算子T∈B(H)且T^*+T=cI,使得对任意X∈B(H),有Ф(X)=XT+T^*X. Let H be a complex Hilbert space with dim H〉 2. B(H) denotes the set of all bounded linear operator on H, SupposeФ. B (H) → B (H) is a linear mapping satisfying [Ф(A)^Ф(A).,B]+[A^A.,Ф(B)]=0 whenever [A^A.,B]=0 for all A,B∈B(H) ,In this paper we apply trace bilinear mapping to characterize Ф and prove that there exists c ∈ R,T∈ B(H) and T+T^* = cI, such that Ф(X)= XT+T^* X for every X ∈ B (H).
作者 陈琳
出处 《安顺学院学报》 2010年第5期80-82,共3页 Journal of Anshun University
关键词 广义Lie可导映射 Lie积 套代数 迹双线性映射 Lie derivable mapping Lie product Nest algebra Trace of bilinear map
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