2022/03/15 by Carl Lian, Lian, Carl
Mathematics · #Algebraic Geometry (math.AG) #Algebraic Geometry and Number Theory #FOS: Mathematics #Geometric Analysis and Curvature Flows #Mathematical Dynamics and Fractals
paper · pdf · doi:10.48550/arxiv.2203.08171
openalex publication_date 2022/03/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Let (C,p1,…,pn) be a fixed general pointed curve and let (X,x1,…,xn) be a smooth hypersurface of degree e and dimension r with n general points. We consider the problem of enumerating maps f:C→ X of degree d (as measured in the ambient projective space) such that f(pi)=xi. When e is small compared to r and d is large compared to g, e, and r, these numbers have been computed first by passing to a virtual count in Gromov-Witten theory obtained by Buch-Pandharipande, and then by showing (in work of the author with Pandharipande) that the virtual counts are enumerative via an analysis of boundary contributions in the moduli space of stable maps. In this note, we give a simpler computation via projective geometry.