Hermitian operators for absolute norms and absolute direct sums
نویسندگان
چکیده
منابع مشابه
Matrices Hermitian for an Absolute Norm
Let v be a (standardized) absolute norm on en. A matrix H in enn is called normHermitian jf the numerical range V(H) determined by v is real. Let :re be the set of all norm-Hermitians in en"' We determine an equivalence relation'" on {t, .•. , n} with the following property: Let HE en"' Then HE :re if and only if H is Hermitian and h,) = 0 if i + j. Let,l =.# + i:lC. Then.l is a subalgebra of e...
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ژورنال
عنوان ژورنال: Linear Algebra and its Applications
سال: 1979
ISSN: 0024-3795
DOI: 10.1016/0024-3795(79)90109-5