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Lower bound for the Perron–Frobenius degrees of Perron numbers
Published online by Cambridge University Press: 14 January 2020
Abstract
Using an idea of Doug Lind, we give a lower bound for the Perron–Frobenius degree of a Perron number that is not totally real, in terms of the layout of its Galois conjugates in the complex plane. As an application, we prove that there are cubic Perron numbers whose Perron–Frobenius degrees are arbitrary large, a result known to Lind, McMullen and Thurston. A similar result is proved for bi-Perron numbers.
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- © The Author(s) 2020. Published by Cambridge University Press
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