Abstract Let A be an n × n Hermitian matrix and A = UΛUH be its spectral decomposition, where U is a unitary matrix of order n and Λ is a diagonal matrix. In this note we present the perturbation ...
This paper provides an analogue to the well-known theorem that commuting matrices over the complex numbers have an eigenvector in common. This analogue applies to the case where it is known only that ...
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