Displaying similar documents to “Maps on matrices that preserve the spectral radius distance”

The minimum, diagonal element of a positive matrix

M. Smyth, T. West (1998)

Studia Mathematica

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Properties of the minimum diagonal element of a positive matrix are exploited to obtain new bounds on the eigenvalues thus exhibiting a spectral bias along the positive real axis familiar in Perron-Frobenius theory.

Finite spectra and quasinilpotent equivalence in Banach algebras

Rudi M. Brits, Heinrich Raubenheimer (2012)

Czechoslovak Mathematical Journal

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This paper further investigates the implications of quasinilpotent equivalence for (pairs of) elements belonging to the socle of a semisimple Banach algebra. Specifically, not only does quasinilpotent equivalence of two socle elements imply spectral equality, but also the trace, determinant and spectral multiplicities of the elements must agree. It is hence shown that quasinilpotent equivalence is established by a weaker formula (than that of the spectral semidistance). More generally,...