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A short proof of Eilenberg and Moore's theorem
2007
Central European Journal of Mathematics
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In this paper we give a short and simple proof the following theorem of S. Eilenberg and J.C. Moore: the only injective object in the category of groups is the trivial group.
doi:10.2478/s11533-006-0040-7
fatcat:rjhzcctxhrekdb4vgmnv7xu7bm