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On sofic approximations of ${\mathbb F}_2\times {\mathbb F}_2$
Published online by Cambridge University Press: 04 May 2021
Abstract
We construct a sofic approximation of ${\mathbb F}_2\times {\mathbb F}_2$ that is not essentially a ‘branched cover’ of a sofic approximation by homomorphisms. This answers a question of L. Bowen.
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- © The Author(s), 2021. Published by Cambridge University Press