Bounding Pinch Point Schemes of Projected Surfaces

Adam Cartisano, Anand Patel

Let $X$ be a smooth surface and let $\phi :X\to {\mathbb{P}}^N$, with $N\ge 4$, be a finitely ramified map which is birational onto its image $Y=\phi (X)$, with $Y$ non-degenerate in $\mat…