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Aut(G) = $C_3$, G = ?

nov 7 10 at 22:39 Andreas Blass 33k●4●54●110

 
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Centers of Semidirect Products

nov 29 10 at 16:50 Robin Chapman 14.5k●2●29●50

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Are there any abelian 2 groups with Complete Holomorphs Other than $C^2_2$ and $C^4_2$?

dec 7 10 at 9:52 Derek Holt 6,868●1●12●27