# Extensions 1→N→G→Q→1 with N=C2 and Q=C22.D28

Direct product G=N×Q with N=C2 and Q=C22.D28
dρLabelID
C2×C22.D28224C2xC2^2.D28448,945

Non-split extensions G=N.Q with N=C2 and Q=C22.D28
extensionφ:Q→Aut NdρLabelID
C2.1(C22.D28) = C4⋊Dic77C4central extension (φ=1)448C2.1(C2^2.D28)448,187
C2.2(C22.D28) = C2.(C4×D28)central extension (φ=1)224C2.2(C2^2.D28)448,204
C2.3(C22.D28) = C23.42D28central extension (φ=1)224C2.3(C2^2.D28)448,477
C2.4(C22.D28) = C24.47D14central extension (φ=1)224C2.4(C2^2.D28)448,484
C2.5(C22.D28) = C23.45D28central extension (φ=1)224C2.5(C2^2.D28)448,492
C2.6(C22.D28) = (C2×C28).28D4central stem extension (φ=1)448C2.6(C2^2.D28)448,193
C2.7(C22.D28) = C14.(C4⋊Q8)central stem extension (φ=1)448C2.7(C2^2.D28)448,195
C2.8(C22.D28) = (C2×C4).21D28central stem extension (φ=1)224C2.8(C2^2.D28)448,208
C2.9(C22.D28) = (C2×C28).33D4central stem extension (φ=1)224C2.9(C2^2.D28)448,211
C2.10(C22.D28) = C23.34D28central stem extension (φ=1)224C2.10(C2^2.D28)448,255
C2.11(C22.D28) = C23.35D28central stem extension (φ=1)224C2.11(C2^2.D28)448,256
C2.12(C22.D28) = C23.10D28central stem extension (φ=1)224C2.12(C2^2.D28)448,257
C2.13(C22.D28) = C23.38D28central stem extension (φ=1)224C2.13(C2^2.D28)448,269
C2.14(C22.D28) = C22.D56central stem extension (φ=1)224C2.14(C2^2.D28)448,270
C2.15(C22.D28) = C23.13D28central stem extension (φ=1)224C2.15(C2^2.D28)448,271
C2.16(C22.D28) = C24.10D14central stem extension (φ=1)224C2.16(C2^2.D28)448,487
C2.17(C22.D28) = C23.16D28central stem extension (φ=1)224C2.17(C2^2.D28)448,495

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