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Extending the exact sequence of nonabelian $H^1$, using nonabelian $H^2$ with coefficients in crossed modules (1608.07366v2)
Published 26 Aug 2016 in math.GR, math.AG, math.CT, and math.KT
Abstract: In this note, following Dedecker and Debremaeker, we extend the cohomology exact sequence for nonabelian $H1$, using nonabelian $H2$ with coefficients in crossed modules.
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