Linear maps preserving numerical radius of tensor product of matrices

arxiv: 1212.3134 · v2 · pith:NHDHMTHGnew · submitted 2012-12-13 · 🧮 math.FA

Ajda Fo\v{s}ner , Zejun Huang , Chi-Kwong Li , Nung-sing Sze This is my paper

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keywords numericallinearmapsmatricesproductradiustensordetermine

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We determine the structure of linear maps on the tensor product of matrices which preserve the numerical range or numerical radius.

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