# Extensions 1→N→G→Q→1 with N=C2 and Q=C2×D28

Direct product G=N×Q with N=C2 and Q=C2×D28
dρLabelID
C22×D28112C2^2xD28224,176

Non-split extensions G=N.Q with N=C2 and Q=C2×D28
extensionφ:Q→Aut NdρLabelID
C2.1(C2×D28) = C4×D28central extension (φ=1)112C2.1(C2xD28)224,68
C2.2(C2×D28) = C2×C4⋊Dic7central extension (φ=1)224C2.2(C2xD28)224,120
C2.3(C2×D28) = C2×D14⋊C4central extension (φ=1)112C2.3(C2xD28)224,122
C2.4(C2×D28) = C282Q8central stem extension (φ=1)224C2.4(C2xD28)224,64
C2.5(C2×D28) = C284D4central stem extension (φ=1)112C2.5(C2xD28)224,69
C2.6(C2×D28) = C4.D28central stem extension (φ=1)112C2.6(C2xD28)224,70
C2.7(C2×D28) = C22⋊D28central stem extension (φ=1)56C2.7(C2xD28)224,77
C2.8(C2×D28) = C22.D28central stem extension (φ=1)112C2.8(C2xD28)224,81
C2.9(C2×D28) = C4⋊D28central stem extension (φ=1)112C2.9(C2xD28)224,90
C2.10(C2×D28) = D142Q8central stem extension (φ=1)112C2.10(C2xD28)224,92
C2.11(C2×D28) = C2×C56⋊C2central stem extension (φ=1)112C2.11(C2xD28)224,97
C2.12(C2×D28) = C2×D56central stem extension (φ=1)112C2.12(C2xD28)224,98
C2.13(C2×D28) = D567C2central stem extension (φ=1)1122C2.13(C2xD28)224,99
C2.14(C2×D28) = C2×Dic28central stem extension (φ=1)224C2.14(C2xD28)224,100
C2.15(C2×D28) = C8⋊D14central stem extension (φ=1)564+C2.15(C2xD28)224,103
C2.16(C2×D28) = C8.D14central stem extension (φ=1)1124-C2.16(C2xD28)224,104
C2.17(C2×D28) = C287D4central stem extension (φ=1)112C2.17(C2xD28)224,125

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