Extensions 1→N→G→Q→1 with N=C₂ and Q=D₉₀

Direct product G=N×Q with N=C₂ and Q=D₉₀

		d	ρ	Label	ID
C₂²×D₄₅		180		C2^2xD45	360,49

Non-split extensions G=N.Q with N=C₂ and Q=D₉₀

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂.₁D₉₀ = C₄×D₄₅	central extension (φ=1)	180	2	C2.1D90	360,26
C₂.₂D₉₀ = C₂×Dic₄₅	central extension (φ=1)	360		C2.2D90	360,28
C₂.₃D₉₀ = Dic₉₀	central stem extension (φ=1)	360	2-	C2.3D90	360,25
C₂.₄D₉₀ = D₁₈₀	central stem extension (φ=1)	180	2+	C2.4D90	360,27
C₂.₅D₉₀ = C₄₅⋊₇D₄	central stem extension (φ=1)	180	2	C2.5D90	360,29

׿

×

⋊

ℤ

𝔽

○

≀

ℚ

◁