$\text{Aut}\Gamma$

G

$\Gamma$

${\mathbb{Z}}_2^2:{\text{S}}_5$

${\mathbb{Z}}_2^2:{\text{S}}_3$

引理3.1

$\left({\text{A}}_5\times {\text{A}}_5\right):{\mathbb{Z}}_4$

${\text{A}}_4\times {\text{A}}_5$

引理3.1