Extensions 1→N→G→Q→1 with N=C3 and Q=C7:C9

Direct product G=NxQ with N=C3 and Q=C7:C9
dρLabelID
C3xC7:C9189C3xC7:C9189,6


Non-split extensions G=N.Q with N=C3 and Q=C7:C9
extensionφ:Q→Aut NdρLabelID
C3.(C7:C9) = C7:C27central extension (φ=1)1893C3.(C7:C9)189,1

׿
x
:
Z
F
o
wr
Q
<