Linear Operators Preserving the Numerical Range (Radius) on Triangular Matrices
نویسنده
چکیده
We characterize those linear operators on triangular or diagonal matrices preserving the numerical range or radius.
منابع مشابه
Linear Operators Preserving the Numerical Range ( Radius ) on Triangular
We characterize those linear operators on triangular or diagonal matrices preserving the numerical range or radius.
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