On maps preserving products of matrices
On maps preserving products of matrices
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DOI:
10.1016/j.laa.2018.10.029
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发表时间:
2019-02
影响因子:
1.1
通讯作者:
Louisa Catalano;Samuel Hsu;Regan Kapalko
中科院分区:
文献类型:
--
作者:
Louisa Catalano;Samuel Hsu;Regan Kapalko
Let D be a division ring with characteristic different from 2, and let R= M n (D). The first goal of this paper is to describe an additive map f: R→ R satisfying the identity f (x) f (y)= m for every x, y∈ R such that x y= k, where m, k∈ R are fixed invertible elements. Additionally, let M= M n (C), the set of all n× n matrices with complex entries. We will describe a bijective linear map g: M→ M satisfying g (X)∘ g (Y)= M whenever X∘ Y= K for every X, Y∈ M, where M, K∈ M are fixed, and∘ denotes the Jordan product.