Extensions 1→N→G→Q→1 with N=C9 and Q=Dic9

Direct product G=N×Q with N=C9 and Q=Dic9
dρLabelID
C9×Dic9362C9xDic9324,6

Semidirect products G=N:Q with N=C9 and Q=Dic9
extensionφ:Q→Aut NdρLabelID
C9⋊Dic9 = C9⋊Dic9φ: Dic9/C18C2 ⊆ Aut C9324C9:Dic9324,19

Non-split extensions G=N.Q with N=C9 and Q=Dic9
extensionφ:Q→Aut NdρLabelID
C9.1Dic9 = Dic81φ: Dic9/C18C2 ⊆ Aut C93242-C9.1Dic9324,1
C9.2Dic9 = C27⋊Dic3φ: Dic9/C18C2 ⊆ Aut C9324C9.2Dic9324,21

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