Extensions 1→N→G→Q→1 with N=Q8 and Q=C21

Direct product G=N×Q with N=Q8 and Q=C21
dρLabelID
Q8×C211682Q8xC21168,41

Semidirect products G=N:Q with N=Q8 and Q=C21
extensionφ:Q→Out NdρLabelID
Q8⋊C21 = C7×SL2(𝔽3)φ: C21/C7C3 ⊆ Out Q8562Q8:C21168,22


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