Properties

Label 3840.ft.1920.D
Order $ 2 $
Index $ 2^{7} \cdot 3 \cdot 5 $
Normal No

Downloads

Learn more

Subgroup ($H$) information

Description:$C_2$
Order: \(2\)
Index: \(1920\)\(\medspace = 2^{7} \cdot 3 \cdot 5 \)
Exponent: \(2\)
Generators: $\langle(6,7)(8,9)(10,11)\rangle$ Copy content Toggle raw display
Nilpotency class: $1$
Derived length: $1$

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

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.

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)$$(C_5\times A_4).C_2^4.C_2^6$
$\operatorname{Aut}(H)$ $C_1$, of order $1$
$\operatorname{res}(S)$$C_1$, of order $1$
$\card{\operatorname{ker}(\operatorname{res})}$\(10240\)\(\medspace = 2^{11} \cdot 5 \)
$W$$C_1$, of order $1$

Related subgroups

Centralizer:$D_{10}.D_4^2$
Normalizer:$D_{10}.D_4^2$
Normal closure:$C_2^3$
Core:$C_1$
Minimal over-subgroups:$C_{10}$$C_2^2$$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$$C_2^2$$C_2^2$$C_2^2$$C_2^2$$C_2^2$
Maximal under-subgroups:$C_1$

Other information

Number of subgroups in this autjugacy class$6$
Number of conjugacy classes in this autjugacy class$2$
Möbius function not computed
Projective image$C_2\times \GL(2,\mathbb{Z}/4):F_5$