Subgroups approximatively of finite index and wreath products. (Q473142)
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scientific article; zbMATH DE number 6371841
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Subgroups approximatively of finite index and wreath products. |
scientific article; zbMATH DE number 6371841 |
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Subgroups approximatively of finite index and wreath products. (English)
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21 November 2014
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Summary: In a group, we introduce a notion of subgroup approximatively of finite index, which extends the notion of groups approximable by finite groups. We deduce a characterization of (restricted, permutational) wreath products that are approximable by finite groups.
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Chabauty topology
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profinite topology
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spaces of subgroups
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wreath products
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subgroups approximatively of finite index
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limits of sequences of subgroups of finite index
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