Geodesic
Subgroups approximatively of finite index and wreath products
Yves Cornulier1
1Université Paris-Sud, Orsay, France
Groups, geometry, and dynamics, Tome 8 (2014) no. 3, pp. 775-788

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DOI

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.
DOI : 10.4171/ggd/247
Classification : 00-XX
Mots-clés : Chabauty topology, profinite topology, space of subgroups, wreath products

Yves Cornulier  1

1 Université Paris-Sud, Orsay, France 
Yves Cornulier. Subgroups approximatively of finite index and wreath products. Groups, geometry, and dynamics, Tome 8 (2014) no. 3, pp. 775-788. doi: 10.4171/ggd/247
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     title = {Subgroups approximatively of finite index and wreath products},
     journal = {Groups, geometry, and dynamics},
     pages = {775--788},
     year = {2014},
     volume = {8},
     number = {3},
     doi = {10.4171/ggd/247},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/247/}
}
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