Profile: Seraphina Eun Bi Lee ⟨seraphinalee@uchicago.edu⟩
Title: Lefschetz fibrations with infinitely many sections
Abstract:
A Lefschetz fibration $M^4 \to S^2$ is a generalization of a surface bundle which also allows finitely many nodal singular fibers. The Arakelov–Parshin rigidity theorem implies that holomorphic Lefschetz fibrations of genus $g \geq 2$ admit only finitely many holomorphic sections. In this talk, we will show that no such finiteness result holds for smooth or symplectic sections by giving examples of genus-$g$ ($g \geq 2$) Lefschetz fibrations with infinitely many homologically distinct sections. This is joint work with Carlos A. Serván.
Notes:
Status: Accepted
Collection: Geometric Topology