Extensions 1→N→G→Q→1 with N=C3 and Q=C13:C3

Direct product G=NxQ with N=C3 and Q=C13:C3
dρLabelID
C3xC13:C3393C3xC13:C3117,3


Non-split extensions G=N.Q with N=C3 and Q=C13:C3
extensionφ:Q→Aut NdρLabelID
C3.(C13:C3) = C13:C9central extension (φ=1)1173C3.(C13:C3)117,1

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