Extensions 1→N→G→Q→1 with N=C8:C4 and Q=C2

Direct product G=NxQ with N=C8:C4 and Q=C2
dρLabelID
C2xC8:C464C2xC8:C464,84

Semidirect products G=N:Q with N=C8:C4 and Q=C2
extensionφ:Q→Out NdρLabelID
C8:C4:1C2 = SD16:C4φ: C2/C1C2 ⊆ Out C8:C432C8:C4:1C264,121
C8:C4:2C2 = D8:C4φ: C2/C1C2 ⊆ Out C8:C432C8:C4:2C264,123
C8:C4:3C2 = C8.26D4φ: C2/C1C2 ⊆ Out C8:C4164C8:C4:3C264,125
C8:C4:4C2 = C8:3D4φ: C2/C1C2 ⊆ Out C8:C432C8:C4:4C264,177
C8:C4:5C2 = C8.2D4φ: C2/C1C2 ⊆ Out C8:C432C8:C4:5C264,178
C8:C4:6C2 = C42.C22φ: C2/C1C2 ⊆ Out C8:C432C8:C4:6C264,10
C8:C4:7C2 = C42.6C4φ: C2/C1C2 ⊆ Out C8:C432C8:C4:7C264,113
C8:C4:8C2 = C42.7C22φ: C2/C1C2 ⊆ Out C8:C432C8:C4:8C264,114
C8:C4:9C2 = C8:9D4φ: C2/C1C2 ⊆ Out C8:C432C8:C4:9C264,116
C8:C4:10C2 = C42.28C22φ: C2/C1C2 ⊆ Out C8:C432C8:C4:10C264,170
C8:C4:11C2 = C42.29C22φ: C2/C1C2 ⊆ Out C8:C432C8:C4:11C264,171
C8:C4:12C2 = C4xM4(2)φ: trivial image32C8:C4:12C264,85
C8:C4:13C2 = C8o2M4(2)φ: trivial image32C8:C4:13C264,86

Non-split extensions G=N.Q with N=C8:C4 and Q=C2
extensionφ:Q→Out NdρLabelID
C8:C4.1C2 = Q16:C4φ: C2/C1C2 ⊆ Out C8:C464C8:C4.1C264,122
C8:C4.2C2 = C8:Q8φ: C2/C1C2 ⊆ Out C8:C464C8:C4.2C264,182
C8:C4.3C2 = C42.2C22φ: C2/C1C2 ⊆ Out C8:C464C8:C4.3C264,11
C8:C4.4C2 = C16:C4φ: C2/C1C2 ⊆ Out C8:C4164C8:C4.4C264,28
C8:C4.5C2 = C8:4Q8φ: C2/C1C2 ⊆ Out C8:C464C8:C4.5C264,127
C8:C4.6C2 = C42.30C22φ: C2/C1C2 ⊆ Out C8:C464C8:C4.6C264,172

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