Extensions 1→N→G→Q→1 with N=C22 and Q=D9

Direct product G=NxQ with N=C22 and Q=D9
dρLabelID
C22xD936C2^2xD972,17

Semidirect products G=N:Q with N=C22 and Q=D9
extensionφ:Q→Aut NdρLabelID
C22:D9 = C3.S4φ: D9/C3S3 ⊆ Aut C22186+C2^2:D972,15
C22:2D9 = C9:D4φ: D9/C9C2 ⊆ Aut C22362C2^2:2D972,8

Non-split extensions G=N.Q with N=C22 and Q=D9
extensionφ:Q→Aut NdρLabelID
C22.D9 = C2xDic9central extension (φ=1)72C2^2.D972,7

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