Inequalities for unitarily invariant norms and singular values

Inequalities for unitarily invariant norms and singular values
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DOI:
10.1016/j.laa.2011.11.030
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发表时间:
2012-05
影响因子:
0.2
通讯作者:
L. Zou
L. Zou
中科院分区:
--
文献类型:
--
作者:
L. Zou

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设Mm,n是m× n复矩阵空间,Mn= Mn,n.范数·称为酉不变范数,如果对所有A∈ Mn和所有酉矩阵U,V∈ Mn,UAV= A。两类酉不变范数特别重要。第一个是Ky Fan k-范数·(k)类,定义为:
Let Mm, n be the space of m× n complex matrices and Mn= Mn, n. A norm· is called unitarily invariant norm if UAV= A for all A∈ Mn and for all unitary matrices U, V∈ Mn. Two classes of unitarily invariant norms are especially important. The first is the class of Ky Fan k-norm·(k), defined as