Group Extensions of the Co-type of a Crossed Module and Strict Categorical Groups
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🧮 math.CT
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extensionsgroupco-typecrossedmoduleapplyingcallcategorical
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Prolongations of a group extension can be studied in a more general situation that we call group extensions of the co-type of a crossed module. Cohomology classification of such extensions is obtained by applying the obstruction theory of monoidal functors.
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