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1. • CommentRowNumber1.
   • CommentAuthorUrs
   • CommentTimeJul 30th 2018
   • PermaLink
   Author: Urs
   Format: MarkdownItexstated the actual definition of "universal central extension" (initial object in a category of central extension) and moved the sentence previously offered here (central extensions of perfect groups by via Schur coverings) to the Examples. <a href="https://ncatlab.org/nlab/revision/diff/universal+central+extension/2">diff</a>, <a href="https://ncatlab.org/nlab/revision/universal+central+extension/2">v2</a>, <a href="https://ncatlab.org/nlab/show/universal+central+extension">current</a>

   stated the actual definition of “universal central extension” (initial object in a category of central extension) and moved the sentence previously offered here (central extensions of perfect groups by via Schur coverings) to the Examples.

   diff, v2, current