Extensions 1→N→G→Q→1 with N=C10 and Q=D9

Direct product G=N×Q with N=C10 and Q=D9
dρLabelID
C10×D9902C10xD9180,10

Semidirect products G=N:Q with N=C10 and Q=D9
extensionφ:Q→Aut NdρLabelID
C10⋊D9 = D90φ: D9/C9C2 ⊆ Aut C10902+C10:D9180,11

Non-split extensions G=N.Q with N=C10 and Q=D9
extensionφ:Q→Aut NdρLabelID
C10.D9 = Dic45φ: D9/C9C2 ⊆ Aut C101802-C10.D9180,3
C10.2D9 = C5×Dic9central extension (φ=1)1802C10.2D9180,1

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