Hopfian Groups are Complete co-Analytic
Logic
2024-01-24 v2
Abstract
We show the set of Hopfian countable groups is a complete co-analytic subset of the standard Borel space of countable groups, resolving a question posed by Simon Thomas (https://doi.org/10.1007/s00153-017-0597-9).
Cite
@article{arxiv.2303.00839,
title = {Hopfian Groups are Complete co-Analytic},
author = {Brian Pinsky},
journal= {arXiv preprint arXiv:2303.00839},
year = {2024}
}
Comments
4 pages