Mathematics – Functional Analysis
Scientific paper
2011-12-27
Mathematics
Functional Analysis
22 pages
Scientific paper
Several notions of spectral radius arise in the study of nonlinear order-preserving positively homogeneous self-maps of cones in Banach spaces. We give conditions that guarantee that all these notions give the same value. In particular, we give a Collatz-Wielandt type formula, which characterizes the growth rate of the orbits in terms of eigenvectors in the closed cone and super-eigenvectors in the interior of the cone. This characterization holds when the cone is normal and when a quasi-compactness condition, involving an essential spectral radius defined in terms of $k$-set contractions, is satisfied.
Akian Marianne
Gaubert Stephane
Nussbaum Roger
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