Extensions 1→N→G→Q→1 with N=C2 and Q=C12xD9

Direct product G=NxQ with N=C2 and Q=C12xD9
dρLabelID
D9xC2xC12144D9xC2xC12432,342


Non-split extensions G=N.Q with N=C2 and Q=C12xD9
extensionφ:Q→Aut NdρLabelID
C2.1(C12xD9) = D9xC24central extension (φ=1)1442C2.1(C12xD9)432,105
C2.2(C12xD9) = C12xDic9central extension (φ=1)144C2.2(C12xD9)432,128
C2.3(C12xD9) = C3xC8:D9central stem extension (φ=1)1442C2.3(C12xD9)432,106
C2.4(C12xD9) = C3xDic9:C4central stem extension (φ=1)144C2.4(C12xD9)432,129
C2.5(C12xD9) = C3xD18:C4central stem extension (φ=1)144C2.5(C12xD9)432,134

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