Abstract
Nonnegative matrix A is called strongly robust if its max-algebraic eigencone is universally reachable, i.e., if the orbit of any initial vector ends up with a max-algebraic eigenvector of A. We consider the case when initial vector is restricted to an interval and A can be any matrix from a given interval of nonnegative circulant matrices. The main aim of the paper is to classify and characterize several types of interval robustness in this situation. This leads us also to study spectral theory and inclusion of attraction cones for circulant matrices in max algebra.

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