Properties

Label 90720.g.810.a1.a1
Order $ 2^{4} \cdot 7 $
Index $ 2 \cdot 3^{4} \cdot 5 $
Normal No

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Subgroup ($H$) information

Description:$C_2\times F_8$
Order: \(112\)\(\medspace = 2^{4} \cdot 7 \)
Index: \(810\)\(\medspace = 2 \cdot 3^{4} \cdot 5 \)
Exponent: \(14\)\(\medspace = 2 \cdot 7 \)
Generators: $\langle(10,12)(13,14), (1,5)(2,3)(4,8)(6,7)(10,12)(13,14), (1,2,4,7,3,6,5), (1,8)(2,7)(3,6)(4,5), (1,7)(2,8)(3,4)(5,6)\rangle$ Copy content Toggle raw display
Derived length: $2$

The subgroup is nonabelian, monomial (hence solvable), metabelian, and an A-group.

Ambient group ($G$) information

Description: $A_5\times {}^2G(2,3)$
Order: \(90720\)\(\medspace = 2^{5} \cdot 3^{4} \cdot 5 \cdot 7 \)
Exponent: \(630\)\(\medspace = 2 \cdot 3^{2} \cdot 5 \cdot 7 \)
Derived length:$1$

The ambient group is nonabelian and nonsolvable.

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)$$S_5\times {}^2G(2,3)$, of order \(181440\)\(\medspace = 2^{6} \cdot 3^{4} \cdot 5 \cdot 7 \)
$\operatorname{Aut}(H)$ $F_8:C_3$, of order \(168\)\(\medspace = 2^{3} \cdot 3 \cdot 7 \)
$W$$F_8:C_3$, of order \(168\)\(\medspace = 2^{3} \cdot 3 \cdot 7 \)

Related subgroups

Centralizer:$C_2^2$
Normalizer:$C_2\times F_8:C_6$
Normal closure:$A_5\times \SL(2,8)$
Core:$C_1$
Minimal over-subgroups:$C_2\times \SL(2,8)$$D_5\times F_8$$F_8:C_6$$S_3\times F_8$$C_2^2\times F_8$
Maximal under-subgroups:$F_8$$C_2^4$$C_{14}$

Other information

Number of subgroups in this conjugacy class$135$
Möbius function$4$
Projective image$A_5\times {}^2G(2,3)$