Lifting braids over ${\mathbb{RP}}^2$ and non-orientable Lefschetz fibrations

Valentina Bais, Porter Morgan, Daniele Zuddas

We show that, given a closed connected non-orientable surface $F$ and a simple branched cover $p:F\to {\mathbb{RP}}^2$ of degree $d\ge 5$, every self-diffeomorphism…