Extensions 1→N→G→Q→1 with N=C₁₈ and Q=C₇:C₃

Direct product G=NxQ with N=C₁₈ and Q=C₇:C₃

		d	ρ	Label	ID
C₁₈xC₇:C₃		126	3	C18xC7:C3	378,23

Semidirect products G=N:Q with N=C₁₈ and Q=C₇:C₃

extension	φ:Q→Aut N	d	ρ	Label	ID
C₁₈:₁(C₇:C₃) = C₂xC₆₃:C₃	φ: C₇:C₃/C₇ → C₃ ⊆ Aut C₁₈	126	3	C18:1(C7:C3)	378,24
C₁₈:₂(C₇:C₃) = C₂xC₆₃:₃C₃	φ: C₇:C₃/C₇ → C₃ ⊆ Aut C₁₈	126	3	C18:2(C7:C3)	378,25

Non-split extensions G=N.Q with N=C₁₈ and Q=C₇:C₃

extension	φ:Q→Aut N	d	ρ	Label	ID
C₁₈.(C₇:C₃) = C₂xC₇:C₂₇	central extension (φ=1)	378	3	C18.(C7:C3)	378,2

Extensions 1→N→G→Q→1 with N=C18 and Q=C7:C3