Extensions 1→N→G→Q→1 with N=C7 and Q=C4

Direct product G=NxQ with N=C7 and Q=C4
dρLabelID
C28281C2828,2

Semidirect products G=N:Q with N=C7 and Q=C4
extensionφ:Q→Aut NdρLabelID
C7:C4 = Dic7φ: C4/C2C2 ⊆ Aut C7282-C7:C428,1


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