Properties

Label 3840.ft.4.P
Order $ 2^{6} \cdot 3 \cdot 5 $
Index $ 2^{2} $
Normal Yes

Downloads

Learn more

Subgroup ($H$) information

Description:$C_2\times F_5\times S_4$
Order: \(960\)\(\medspace = 2^{6} \cdot 3 \cdot 5 \)
Index: \(4\)\(\medspace = 2^{2} \)
Exponent: \(60\)\(\medspace = 2^{2} \cdot 3 \cdot 5 \)
Generators: $\langle(2,3,5,4)(6,11)(7,10)(14,15), (8,9)(14,15), (2,5)(3,4), (12,13)(14,15), (6,7) \!\cdots\! \rangle$ Copy content Toggle raw display
Derived length: $3$

The subgroup is normal, a semidirect factor, nonabelian, and monomial (hence solvable).

Ambient group ($G$) information

Description: $C_2\times \GL(2,\mathbb{Z}/4):F_5$
Order: \(3840\)\(\medspace = 2^{8} \cdot 3 \cdot 5 \)
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: $C_2^2$
Order: \(4\)\(\medspace = 2^{2} \)
Exponent: \(2\)
Automorphism Group: $S_3$, of order \(6\)\(\medspace = 2 \cdot 3 \)
Outer Automorphisms: $S_3$, of order \(6\)\(\medspace = 2 \cdot 3 \)
Derived length: $1$

The quotient is abelian (hence nilpotent, solvable, supersolvable, monomial, metabelian, and an A-group), a $p$-group (hence elementary and hyperelementary), metacyclic, and rational.

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\times A_4).C_2^4.C_2^6$
$\operatorname{Aut}(H)$ $C_2^2\times F_5\times S_4$, of order \(1920\)\(\medspace = 2^{7} \cdot 3 \cdot 5 \)
$\operatorname{res}(S)$$C_2^2\times F_5\times S_4$, of order \(1920\)\(\medspace = 2^{7} \cdot 3 \cdot 5 \)
$\card{\operatorname{ker}(\operatorname{res})}$\(8\)\(\medspace = 2^{3} \)
$W$$C_2\times F_5\times S_4$, of order \(960\)\(\medspace = 2^{6} \cdot 3 \cdot 5 \)

Related subgroups

Centralizer:$C_2^2$
Normalizer:$C_2\times \GL(2,\mathbb{Z}/4):F_5$
Complements:$C_2^2$ $C_2^2$ $C_2^2$ $C_2^2$ $C_2^2$ $C_2^2$ $C_2^2$ $C_2^2$ $C_2^2$ $C_2^2$ $C_2^2$ $C_2^2$ $C_2^2$
Minimal over-subgroups:$C_2^2\times F_5\times S_4$$\GL(2,\mathbb{Z}/4):F_5$
Maximal under-subgroups:$D_{10}\times S_4$$C_2\times A_4\times F_5$$D_{10}.S_4$$F_5\times S_4$$D_{10}.C_2^4$$D_6\times F_5$$C_2^4.D_6$

Other information

Number of subgroups in this autjugacy class$4$
Number of conjugacy classes in this autjugacy class$4$
Möbius function not computed
Projective image$C_2^2\times F_5\times S_4$