Automorphism group of a free group

The automorphism group of a free group is a fundamental object in group theory and algebraic topology. Let \( F_n \) denote a free group on \( n \) generators. The automorphism group of \( F_n \), denoted as \( \text{Aut}(F_n) \), consists of all isomorphisms from \( F_n \) to itself. This group captures the symmetries of the free group.