Extensions 1→N→G→Q→1 with N=C₂² and Q=C₂₁

Direct product G=N×Q with N=C₂² and Q=C₂₁

		d	ρ	Label	ID
C₂×C₄₂		84		C2xC42	84,15

Semidirect products G=N:Q with N=C₂² and Q=C₂₁

extension	φ:Q→Aut N	d	ρ	Label	ID
C₂²⋊C₂₁ = C₇×A₄	φ: C₂₁/C₇ → C₃ ⊆ Aut C₂²	28	3	C2^2:C21	84,10

׿

×

⋊

ℤ

𝔽

○

≀

ℚ

◁