Palindromic Automorphisms of Free Groups

Valeriy G. Bardakov, Krishnendu Gongopadhyay, Mahender Singh

Let $F_n$ be the free group of rank $n$ with free basis $X=\{x_1,\dots ,x_n\}$. A palindrome is a word in $X^{\pm 1}$ that reads the same backwards as forwards. The palindromic aut…