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arXiv · 2310.13239

Elementary totally disconnected, locally compact groups of higher complexity

João V. P. e Silva
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Abstract

The article focuses on a class of second countable groups assembled from profinite and discrete by elementary operations. We focus on a rank associated with these groups that measure their complexity, the decomposition rank. A collection of groups acting on $\aleph_0$-regular trees is defined and used for the first construction of a group with decomposition rank $\omega^\omega+1$.

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João V. P. e Silva. 2023-10-20. Elementary totally disconnected, locally compact groups of higher complexity. https://arxiv.org/abs/2310.13239

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