For a bounded subset S of d x d complex matrices, the Berger-Wang theorem and Bochi's inequality allow to approximate the joint spectral radius of S from below by the spectral radius of a short product of elements from S. Our goal is twofold: we review these results, providing self-contained proofs, and we derive an improved version with explicit bounds that are polynomial in d. We also discuss other complete valued fields.
CITATION STYLE
Breuillard, E. (2022). On the joint spectral radius. In Analysis at Large: Dedicated to the Life and Work of Jean Bourgain (pp. 1–16). Springer International Publishing. https://doi.org/10.1007/978-3-031-05331-3_1
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