Profinite rigidity for Seifert fibre spaces
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Abstract
An interesting question is whether two 3-manifolds can be distinguished by computing and comparing their collections of finite covers; more precisely, by the profinite completions of their fundamental groups. In this paper, we solve this question completely for closed orientable Seifert fibre spaces. In particular, all Seifert fibre spaces are distinguished from each other by their profinite completions apart from some previously-known examples due to Hempel. We also characterize when bounded Seifert fibre space groups have isomorphic profinite completions, given some conditions on the boundary.
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Keywords
3-Manifolds, Profinite rigidity, Seifert fibre spaces
Journal Title
Geometriae Dedicata
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Journal ISSN
0046-5755
1572-9168
1572-9168
Volume Title
188
Publisher
Springer Science and Business Media LLC