Properties

Label 7680.ft.1920._.D
Order $ 2^{2} $
Index $ 2^{7} \cdot 3 \cdot 5 $
Normal Yes

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Subgroup ($H$) information

Description:$C_2^2$
Order: \(4\)\(\medspace = 2^{2} \)
Index: \(1920\)\(\medspace = 2^{7} \cdot 3 \cdot 5 \)
Exponent: \(2\)
Generators: $\langle(1,5)(2,4)(3,8)(6,7), (1,2)(3,6)(4,5)(7,8)\rangle$ Copy content Toggle raw display
Nilpotency class: $1$
Derived length: $1$

The subgroup is normal, abelian (hence nilpotent, solvable, supersolvable, monomial, metabelian, and an A-group), a $p$-group (hence elementary and hyperelementary), metacyclic, and rational. Whether it is a direct factor or a semidirect factor has not been computed.

Ambient group ($G$) information

Description: $C_2^4.(F_5\times S_4)$
Order: \(7680\)\(\medspace = 2^{9} \cdot 3 \cdot 5 \)
Exponent: \(60\)\(\medspace = 2^{2} \cdot 3 \cdot 5 \)
Derived length:$3$

The ambient group is nonabelian and solvable. Whether it is monomial has not been computed.

Quotient group ($Q$) structure

Description: $C_2^2\times F_5\times S_4$
Order: \(1920\)\(\medspace = 2^{7} \cdot 3 \cdot 5 \)
Exponent: \(60\)\(\medspace = 2^{2} \cdot 3 \cdot 5 \)
Automorphism Group: $F_5\times S_4\times C_2^2:S_4$
Outer Automorphisms: $C_2^2:S_4$, of order \(96\)\(\medspace = 2^{5} \cdot 3 \)
Nilpotency class: $-1$
Derived length: $3$

The quotient is nonabelian and monomial (hence solvable).

Automorphism information

While the subgroup $H$ is not characteristic, the stabilizer $S$ of $H$ in the automorphism group $\operatorname{Aut}(G)$ of the ambient group acts on $H$, yielding a homomorphism $\operatorname{res} : S \to \operatorname{Aut}(H)$. The image of $\operatorname{res}$ on the inner automorphisms $\operatorname{Inn}(G) \cap S$ is the Weyl group $W = N_G(H) / Z_G(H)$.

$\operatorname{Aut}(G)$$(C_5^3\times C_{10}).Q_8$, of order \(1105920\)\(\medspace = 2^{13} \cdot 3^{3} \cdot 5 \)
$\operatorname{Aut}(H)$ $S_3$, of order \(6\)\(\medspace = 2 \cdot 3 \)
$\card{W}$ not computed

Related subgroups

Centralizer: not computed
Normalizer: not computed
Autjugate subgroups: Subgroups are not computed up to automorphism.

Other information

Möbius function not computed
Projective image not computed