Maximal subgroups of A5 (source code)

= Maximal subgroups of A5
{title2=$A_4,\ C_5\rtimes C_2,\ S_3$}

Every maximal proper <subgroup> normalizes one of its <minimal normal subgroups>. As $A_5$ has no proper nonabelian simple <subgroup>, that <subgroup> is elementary abelian. Its possible types are $C_2,C_2^2,C_3,C_5$. Their <normalizers> have orders $4,12,6,10$ respectively. The order-four <normalizer> lies in an order-twelve point stabilizer; the other three types are maximal and each forms a single <conjugacy class>. There are five, six and ten <maximal subgroups> of orders twelve, ten and six, respectively.