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Profinite groups and completions
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Abstract
A profinite group is by definition an inverse limit of finite groups. In this chapter we begin by discussing inverse limits in general, and then we show that profinite groups can be characterized in other ways too. Important and natural examples arise as profinite completions of abstract groups.
Title: Profinite groups and completions
Description:
Abstract
A profinite group is by definition an inverse limit of finite groups.
In this chapter we begin by discussing inverse limits in general, and then we show that profinite groups can be characterized in other ways too.
Important and natural examples arise as profinite completions of abstract groups.
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