Extensions 1→N→G→Q→1 with N=C20 and Q=D11

Direct product G=N×Q with N=C20 and Q=D11
dρLabelID
C20×D112202C20xD11440,25

Semidirect products G=N:Q with N=C20 and Q=D11
extensionφ:Q→Aut NdρLabelID
C201D11 = D220φ: D11/C11C2 ⊆ Aut C202202+C20:1D11440,36
C202D11 = C4×D55φ: D11/C11C2 ⊆ Aut C202202C20:2D11440,35
C203D11 = C5×D44φ: D11/C11C2 ⊆ Aut C202202C20:3D11440,26

Non-split extensions G=N.Q with N=C20 and Q=D11
extensionφ:Q→Aut NdρLabelID
C20.1D11 = Dic110φ: D11/C11C2 ⊆ Aut C204402-C20.1D11440,34
C20.2D11 = C553C8φ: D11/C11C2 ⊆ Aut C204402C20.2D11440,5
C20.3D11 = C5×Dic22φ: D11/C11C2 ⊆ Aut C204402C20.3D11440,24
C20.4D11 = C5×C11⋊C8central extension (φ=1)4402C20.4D11440,4

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