Automorphisms of the mapping class group of a nonorientable surface

Ferihe Atalan, Błażej Szepietowski

Let $S$ be a nonorientable surface of genus $g\ge 5$ with $n\ge 0$ punctures, and $\Mcg(S)$ its mapping class group. We define the complexity of $S$ to be the maximum rank of a fre…