Extensions 1→N→G→Q→1 with N=C2 and Q=C5:D20

Direct product G=NxQ with N=C2 and Q=C5:D20
dρLabelID
C2xC5:D2040C2xC5:D20400,177


Non-split extensions G=N.Q with N=C2 and Q=C5:D20
extensionφ:Q→Aut NdρLabelID
C2.1(C5:D20) = D10:Dic5central extension (φ=1)80C2.1(C5:D20)400,72
C2.2(C5:D20) = C10.D20central extension (φ=1)40C2.2(C5:D20)400,73
C2.3(C5:D20) = Dic5:Dic5central extension (φ=1)80C2.3(C5:D20)400,74
C2.4(C5:D20) = C5:D40central stem extension (φ=1)404+C2.4(C5:D20)400,65
C2.5(C5:D20) = C52:3SD16central stem extension (φ=1)804-C2.5(C5:D20)400,67
C2.6(C5:D20) = C52:4SD16central stem extension (φ=1)404+C2.6(C5:D20)400,68
C2.7(C5:D20) = C52:3Q16central stem extension (φ=1)804-C2.7(C5:D20)400,70

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