Properties

Label 4374.ik.486.b1
Order $ 3^{2} $
Index $ 2 \cdot 3^{5} $
Normal Yes

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Subgroup ($H$) information

Description:$C_9$
Order: \(9\)\(\medspace = 3^{2} \)
Index: \(486\)\(\medspace = 2 \cdot 3^{5} \)
Exponent: \(9\)\(\medspace = 3^{2} \)
Generators: $c^{4}de^{2}$ Copy content Toggle raw display
Nilpotency class: $1$
Derived length: $1$

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

Ambient group ($G$) information

Description: $C_9^2.(S_3\times C_3^2)$
Order: \(4374\)\(\medspace = 2 \cdot 3^{7} \)
Exponent: \(18\)\(\medspace = 2 \cdot 3^{2} \)
Derived length:$2$

The ambient group is nonabelian, supersolvable (hence solvable and monomial), and metabelian.

Quotient group ($Q$) structure

Description: $C_3^3.(C_3\times S_3)$
Order: \(486\)\(\medspace = 2 \cdot 3^{5} \)
Exponent: \(18\)\(\medspace = 2 \cdot 3^{2} \)
Automorphism Group: $C_3^4.S_3^2$, of order \(2916\)\(\medspace = 2^{2} \cdot 3^{6} \)
Outer Automorphisms: $S_3$, of order \(6\)\(\medspace = 2 \cdot 3 \)
Nilpotency class: $-1$
Derived length: $2$

The quotient is nonabelian, supersolvable (hence solvable and monomial), and metabelian.

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_3^3.C_3^3.C_3^3.C_6.C_2$, of order \(236196\)\(\medspace = 2^{2} \cdot 3^{10} \)
$\operatorname{Aut}(H)$ $C_6$, of order \(6\)\(\medspace = 2 \cdot 3 \)
$\operatorname{res}(S)$$C_6$, of order \(6\)\(\medspace = 2 \cdot 3 \)
$\card{\operatorname{ker}(\operatorname{res})}$\(13122\)\(\medspace = 2 \cdot 3^{8} \)
$W$$C_6$, of order \(6\)\(\medspace = 2 \cdot 3 \)

Related subgroups

Centralizer:$C_9^2.C_3^2$
Normalizer:$C_9^2.(S_3\times C_3^2)$
Minimal over-subgroups:$C_3\times C_9$$C_3\times C_9$$C_9:C_3$$C_9:C_3$$C_3\times C_9$$C_9:C_3$$C_3\times C_9$$C_9:C_3$$D_9$
Maximal under-subgroups:$C_3$

Other information

Number of subgroups in this autjugacy class$3$
Number of conjugacy classes in this autjugacy class$3$
Möbius function$0$
Projective image$C_9^2.(S_3\times C_3^2)$