Profinite topology
= Profinite topology
The profinite topology on a group takes the cosets of finite-index normal subgroups as a neighborhood basis. A profinite group carries the inverse-limit topology from its finite quotients.
= Profinite topology
The profinite topology on a group takes the cosets of finite-index normal subgroups as a neighborhood basis. A profinite group carries the inverse-limit topology from its finite quotients.