Extensions 1→N→G→Q→1 with N=C22 and Q=D21

Direct product G=NxQ with N=C22 and Q=D21
dρLabelID
C22xD2184C2^2xD21168,56

Semidirect products G=N:Q with N=C22 and Q=D21
extensionφ:Q→Aut NdρLabelID
C22:D21 = C7:S4φ: D21/C7S3 ⊆ Aut C22286+C2^2:D21168,46
C22:2D21 = C21:7D4φ: D21/C21C2 ⊆ Aut C22842C2^2:2D21168,38

Non-split extensions G=N.Q with N=C22 and Q=D21
extensionφ:Q→Aut NdρLabelID
C22.D21 = C2xDic21central extension (φ=1)168C2^2.D21168,37

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