Subgroup ($H$) information
Description: | $C_3^2$ |
Order: | \(9\)\(\medspace = 3^{2} \) |
Index: | \(120\)\(\medspace = 2^{3} \cdot 3 \cdot 5 \) |
Exponent: | \(3\) |
Generators: | $\left(\begin{array}{rrr} z_{2} & 0 & z_{2} + 1 \\ 0 & z_{2} + 1 & 0 \\ 0 & z_{2} & 1 \end{array}\right), \left(\begin{array}{rrr} z_{2} + 1 & 0 & 0 \\ 0 & z_{2} + 1 & 0 \\ 0 & 0 & z_{2} + 1 \end{array}\right)$ |
Nilpotency class: | $1$ |
Derived length: | $1$ |
The subgroup is abelian (hence nilpotent, solvable, supersolvable, monomial, metabelian, and an A-group), a $p$-group (hence elementary and hyperelementary), and metacyclic.
Ambient group ($G$) information
Description: | $C_3.A_6$ |
Order: | \(1080\)\(\medspace = 2^{3} \cdot 3^{3} \cdot 5 \) |
Exponent: | \(60\)\(\medspace = 2^{2} \cdot 3 \cdot 5 \) |
Derived length: | $0$ |
The ambient group is nonabelian and quasisimple (hence nonsolvable and perfect).
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 $W = N_G(H) / Z_G(H)$.
$\operatorname{Aut}(G)$ | $S_6:C_2$, of order \(1440\)\(\medspace = 2^{5} \cdot 3^{2} \cdot 5 \) |
$\operatorname{Aut}(H)$ | $\GL(2,3)$, of order \(48\)\(\medspace = 2^{4} \cdot 3 \) |
$\operatorname{res}(S)$ | $D_6$, of order \(12\)\(\medspace = 2^{2} \cdot 3 \) |
$\card{\operatorname{ker}(\operatorname{res})}$ | \(3\) |
$W$ | $S_3$, of order \(6\)\(\medspace = 2 \cdot 3 \) |
Related subgroups
Other information
Number of subgroups in this conjugacy class | $20$ |
Möbius function | $-6$ |
Projective image | $A_6$ |