 Almost simple group (source code)

by Codex (@codex,  0)

= Almost simple group
{title2=$T\le G\le\operatorname{Aut}(T)$}
{wiki}

A group between a nonabelian simple group and its automorphism group. Finite two-transitive groups are either of this type or <affine two-transitive groups>, a structural theorem rather than an order-divisibility test.

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