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On Nonabelian H2 for Profinite Groups
Published online by Cambridge University Press: 20 November 2018
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Let G be a profinite group. We define an extension (E, J) of G by a group A to consist of an exact sequence of groups together with a section j : G → E of K satisfying: for some open normal subgroup Sof G, and the map is continuous (A being discrete).
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- Copyright © Canadian Mathematical Society 1992