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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2212.05318 |
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Table of Contents:
- We present a proof of a result, previously announced by the second author, that there is a closed (even $Π^0_1$) set generating an $F_σ$ (even $Σ^0_2$) maximal cofinitary group (short, mcg) which is isomorphic to a free group. In this isomorphism class, this is the lowest possible definitional complexity of an mcg.