Subgroup ($H$) information
| Description: | $D_5$ |
| Order: | \(10\)\(\medspace = 2 \cdot 5 \) |
| Index: | \(11346\)\(\medspace = 2 \cdot 3 \cdot 31 \cdot 61 \) |
| Exponent: | \(10\)\(\medspace = 2 \cdot 5 \) |
| Generators: |
$\left[ \left(\begin{array}{rr}
17 & 58 \\
10 & 27
\end{array}\right) \right], \left[ \left(\begin{array}{rr}
47 & 15 \\
56 & 14
\end{array}\right) \right]$
|
| Derived length: | $2$ |
The subgroup is nonabelian, a Z-group (hence solvable, supersolvable, monomial, metacyclic, metabelian, and an A-group), and hyperelementary for $p = 2$.
Ambient group ($G$) information
| Description: | $\PSL(2,61)$ |
| Order: | \(113460\)\(\medspace = 2^{2} \cdot 3 \cdot 5 \cdot 31 \cdot 61 \) |
| Exponent: | \(56730\)\(\medspace = 2 \cdot 3 \cdot 5 \cdot 31 \cdot 61 \) |
| Derived length: | $0$ |
The ambient group is nonabelian, simple (hence nonsolvable, perfect, quasisimple, and almost simple), and an A-group.
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 $W = N_G(H) / Z_G(H)$.
| $\operatorname{Aut}(G)$ | $\PGL(2,61)$, of order \(226920\)\(\medspace = 2^{3} \cdot 3 \cdot 5 \cdot 31 \cdot 61 \) |
| $\operatorname{Aut}(H)$ | $F_5$, of order \(20\)\(\medspace = 2^{2} \cdot 5 \) |
| $W$ | $D_5$, of order \(10\)\(\medspace = 2 \cdot 5 \) |
Related subgroups
| Centralizer: | $C_2$ | ||
| Normalizer: | $D_{10}$ | ||
| Normal closure: | $\PSL(2,61)$ | ||
| Core: | $C_1$ | ||
| Minimal over-subgroups: | $A_5$ | $D_{15}$ | $D_{10}$ |
| Maximal under-subgroups: | $C_5$ | $C_2$ | |
| Autjugate subgroups: | 113460.a.11346.b1.a2 |
Other information
| Number of subgroups in this conjugacy class | $5673$ |
| Möbius function | $2$ |
| Projective image | $\PSL(2,61)$ |