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The Sylvester equation in Banach algebras
Linear Algebra and its Applications ( IF 1.1 ) Pub Date : 2021-08-24 , DOI: 10.1016/j.laa.2021.08.015 Amol Sasane 1
中文翻译:
Banach 代数中的 Sylvester 方程
更新日期:2021-08-29
Linear Algebra and its Applications ( IF 1.1 ) Pub Date : 2021-08-24 , DOI: 10.1016/j.laa.2021.08.015 Amol Sasane 1
Affiliation
Let be a unital complex semisimple Banach algebra, and denote its maximal ideal space. For a matrix , denotes the matrix obtained by taking entry-wise Gelfand transforms. For a matrix , denotes the set of eigenvalues of M. It is shown that if and are such that for all , , then for all , the Sylvester equation has a unique solution . As an application, Roth's removal rule is proved in the context of matrices over a Banach algebra.
中文翻译:
Banach 代数中的 Sylvester 方程
让 是一个单位复数半单 Banach 代数,并且 表示其最大理想空间。对于矩阵, 表示通过采用逐项 Gelfand 变换获得的矩阵。对于矩阵, 表示M的特征值集。表明如果 和 对所有人来说都是这样 , ,那么对于所有 ,西尔维斯特方程 有一个独特的解决方案 . 作为应用,Roth 去除规则在 Banach 代数上的矩阵上下文中得到证明。