Extensions 1→N→G→Q→1 with N=C2 and Q=C7×D9

Direct product G=N×Q with N=C2 and Q=C7×D9
dρLabelID
C14×D91262C14xD9252,13


Non-split extensions G=N.Q with N=C2 and Q=C7×D9
extensionφ:Q→Aut NdρLabelID
C2.(C7×D9) = C7×Dic9central extension (φ=1)2522C2.(C7xD9)252,3

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