Extensions 1→N→G→Q→1 with N=D21 and Q=C3

Direct product G=NxQ with N=D21 and Q=C3
dρLabelID
C3xD21422C3xD21126,13

Semidirect products G=N:Q with N=D21 and Q=C3
extensionφ:Q→Out NdρLabelID
D21:C3 = C3:F7φ: C3/C1C3 ⊆ Out D21216+D21:C3126,9


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