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Extensions 1→N→G→Q→1 with N=C2 and Q=C20:4D4

Direct product G=NxQ with N=C2 and Q=C20:4D4
dρLabelID
C2xC20:4D4160C2xC20:4D4320,1147


Non-split extensions G=N.Q with N=C2 and Q=C20:4D4
extensionφ:Q→Aut NdρLabelID
C2.1(C20:4D4) = C42:8Dic5central extension (φ=1)320C2.1(C20:4D4)320,562
C2.2(C20:4D4) = (C2xC4):6D20central extension (φ=1)160C2.2(C20:4D4)320,566
C2.3(C20:4D4) = (C2xC20):5D4central stem extension (φ=1)160C2.3(C20:4D4)320,298
C2.4(C20:4D4) = (C2xC20).33D4central stem extension (φ=1)160C2.4(C20:4D4)320,304
C2.5(C20:4D4) = C8:5D20central stem extension (φ=1)160C2.5(C20:4D4)320,320
C2.6(C20:4D4) = C20:4D8central stem extension (φ=1)160C2.6(C20:4D4)320,322
C2.7(C20:4D4) = C8.8D20central stem extension (φ=1)160C2.7(C20:4D4)320,323
C2.8(C20:4D4) = C20:4Q16central stem extension (φ=1)320C2.8(C20:4D4)320,326
C2.9(C20:4D4) = C8:D20central stem extension (φ=1)160C2.9(C20:4D4)320,339
C2.10(C20:4D4) = C8.D20central stem extension (φ=1)160C2.10(C20:4D4)320,342

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