Extensions 1→N→G→Q→1 with N=C4 and Q=Dic21

Direct product G=NxQ with N=C4 and Q=Dic21
dρLabelID
C4xDic21336C4xDic21336,97

Semidirect products G=N:Q with N=C4 and Q=Dic21
extensionφ:Q→Aut NdρLabelID
C4:Dic21 = C84:C4φ: Dic21/C42C2 ⊆ Aut C4336C4:Dic21336,99

Non-split extensions G=N.Q with N=C4 and Q=Dic21
extensionφ:Q→Aut NdρLabelID
C4.Dic21 = C84.C4φ: Dic21/C42C2 ⊆ Aut C41682C4.Dic21336,96
C4.2Dic21 = C21:C16central extension (φ=1)3362C4.2Dic21336,5
C4.3Dic21 = C2xC21:C8central extension (φ=1)336C4.3Dic21336,95

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