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

Direct product G=N×Q with N=C22 and Q=D9
dρLabelID
D9×C221982D9xC22396,8

Semidirect products G=N:Q with N=C22 and Q=D9
extensionφ:Q→Aut NdρLabelID
C22⋊D9 = D198φ: D9/C9C2 ⊆ Aut C221982+C22:D9396,9

Non-split extensions G=N.Q with N=C22 and Q=D9
extensionφ:Q→Aut NdρLabelID
C22.D9 = Dic99φ: D9/C9C2 ⊆ Aut C223962-C22.D9396,3
C22.2D9 = C11×Dic9central extension (φ=1)3962C22.2D9396,1

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