منابع مشابه
Twice Differentiable Spectral Functions
A function F on the space of n × n real symmetric matrices is called spectral if it depends only on the eigenvalues of its argument. Spectral functions are just symmetric functions of the eigenvalues. We show that a spectral function is twice (continuously) differentiable at a matrix if and only if the corresponding symmetric function is twice (continuously) differentiable at the vector of eige...
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ژورنال
عنوان ژورنال: Integral Equations and Operator Theory
سال: 1991
ISSN: 0378-620X,1420-8989
DOI: 10.1007/bf01198943